BPH
Extension circular, New Mexico College of Agriculture and Mechanic Arts Cooperative Extension Service. State College, NM. Nos. 1-223, 1915-5?. Extens. Circ. New Mexico Coll. Agric. Mech. Arts Coop. Extens. Serv. Superseded by: Circular, New Mexico State University Cooperative Extension Service. State College (?University Park), NM. HI 82567
Extension circular, New York State College of Agriculture Extension Service. Ithaca, NY. Nos. 1-15, 1913-15. Extens. Circ. New York State Coll. Agric. Extens. Serv. HI 82453
Extension circular, North Dakota Agricultural College Cooperative Extension Service. Fargo, ND. Nos. 14-191-?, 1917?-48-?? Extens. Circ. North Dakota Agric. Coll. Coop. Extens. Serv. Preceded by: Agricultural extension bulletin, North Dakota Agricultural College Cooperative Extension Service. Fargo, ND. HI 82459
Extension circular, Oregon State University Extension Service. Corvallis, OR. No. 1+, 1922+. Extens. Circ. Oregon State Univ. Extens. Serv. HI 82329
Extension circular, Pennsylvania State College School of Agriculture. State College, PA. Nos. 1-102, 1912-24 [nos. 1-41 were undated]. Extens. Circ. Pennsylvania State Coll. School Agric. HI 82344
Extension circular, Pennsylvania State University Agricultural Extension Service. University Park, PA. No. 339+, 1986?+. Extens. Circ. Pennsylvania State Univ. Agric. Extens. Serv. Preceded by: Special circular, Pennsylvania State University Agricultural Extension Service. University Park, PA. ULS reference. ISSN 1057-2449 HI 82335
Extension circular, Purdue University Cooperative Extension Service. Lafayette, IN. Nos. 420-539, 1956-69. Extens. Circ. Purdue Univ. Agric. Extens. Serv. Preceded by: Extension leaflet, Department of Agricultural Extension, Purdue University. Lafayette, IN and Extension bulletin, Purdue University Agricultural Extension Service. Lafayette, IN. HI 82256
Extension circular, South Dakota State University Cooperative Extension Service. Brookings, SD. No. 1+, 1908?+. Extens. Circ. South Dakota State Univ. Coop. Extens. Serv. HI 82445
Extension circular, University of Alaska Cooperative Extension Service. College, AK. No. 1+, 1942+. Extens. Circ. Univ. Alaska Coop. Extens. Serv. HI 80029
Extension circular, University of Arizona Agricultural Extension Service. Tucson, AZ. Nos. 42-294, 1922-66 [no. 214 not published]. Extens. Circ. Univ. Arizona Agric. Extens. Serv. Preceded by: Circular, Arizona Agricultural Experiment Station. Tucson, AZ. HI 50387
Extension circular, University of Connecticut, College of Agriculture, Agricultural Extension Service. Storrs, CT. Nos. ?-53, ?-1941. Extens. Circ. Univ. Connecticut Coll. Agric. Preceded by: Extension circular, Connecticut Agricultural College, Cooperative Extension Service. Storrs, CT. HI 81768
Extension circular, University of Delaware, Agricultural Extension Service. Newark, DE. No. ?-61?, ?-1950; [n.s.,] no. 1+, 195?+ Extens. Circ. Univ. Delaware Agric. Extens. Serv. Preceded by: Extension circular, Delaware College, Division of Agricultural Extension. Newark, DE. HI 82507
Extension circular, University of Hawaii Agricultural Extension Service. Honolulu, HI. Nos. 1-34, 1929-38. Extens. Circ. Univ. Hawaii Agric. Extens. Serv. Superseded by: Agricultural extension circular, University of Hawaii Agricultural Extension Service. Honolulu, HI. HI 81723
Extension circular, University of Idaho Agricultural Extension Service. Moscow, ID. ?-1920-21-?? Extens. Circ. Univ. Idaho Agric. Extens. Serv. Continued in: Bulletin, College of Agriculture, University of Idaho. New series. Moscow, ID. HI 82544
Extension circular, University of Illinois Cooperative Extension Service. Urbana, IL. Nos. 1-45 1916-21. Extens. Circ. Univ. Illinois Extens. Serv. HI 82514
Extension circular, University of Minnesota Agricultural Extension Division. St. Paul, MN. Nos. 1-47-?, 19??-??-? Extens. Circ. Univ. Minnesota Dept. Agric. Extens. Div. HI 82558
Extension circular, New Hampshire College and Experiment Station Durham, NH. Nos. 1-161-388-?, 1912-34-??-?? Extens. Circ. Univ. New Hampshire Coll. Exp. Sta. HI 82362
Extension circular, University of Puerto Rico Agricultural Extension Service. Río Piedras. No. 1+, 1935+. Extens. Circ. Univ. Puerto Rico Agric. Extens. Serv. HI 82432
Extension circular, University of Wyoming Agricultural Extension Service. Laramie, WY. Nos. 1-188, 1919-65. Extens. Circ. Univ. Wyoming Agric. Extens. Serv. HI 80004
Extension circular, Utah State University of Agriculture and Applied Science Extension Service. Logan, UT. N.s., nos. 1-149, 192-??; no. 253+, 1952?+. Extens. Circ. Utah State Univ. Agric. Appl. Sci. Extens. Serv. For nos. 150-252, 1947-52, see: Extension bulletin, Utah State University of Agriculture and Applied Science Extension Service. Logan, UT. HI 82419
Extension circular, Washington State University Cooperative Extension Service. Pullman, WA. No. 1-394+, 1916-6?+ [some numbers published in revised editions]. Extens. Circ. Washington State Univ. Coop. Extens. Serv. ULS reference. ISSN 0084-3406 HI 82196
Extension Division news, Virginia Polytechnic Institute Agricultural Extension Service. Blacksburg. Vols. 1-27, 1918-45. Extens. Div. News Virginia Polytechn. Inst. Agric, Extens. Serv. Superseded by: Extension Service news, ??? HI 56952
Extension evaluation studies, North Carolina State College Agricultural Extension Service. Raleigh, NC. Nos. 1-4, 1957-63. Extens. Eval. Stud. North Carolina State Coll. Agric. Extens. Serv. HI 82606
Extension farm news, North Carolina State College. Raleigh, NC. Vols. 1-42(10), 1915-57. Extens. Farm News North Carolina State Coll. Superseded by: Extension news. Raleigh, NC. HI 82607
Extension folder, North Carolina State College [etc.] Agricultural Extension Service. Raleigh, NC. Nos. 1-320-327, 1920-75-?? Extens. Folder North Carolina State Coll. Agric. Extens. Serv. HI 82530
