BPH
Circular, New Mexico State University Cooperative Extension Service. State College, University Park, NM. No. 224+, 1960?+. Circ. New Mexico State Univ. Coop. Extens. Serv. Preceded by: Extension Circular, New Mexico College of Agriculture and Mechanic Arts Cooperative Extension Service. State College, NM. ULS reference. ISSN 0861-6691 HI 82568
Circular, New York (State) Agricultural Experiment Station. Geneva, NY. Nos. 1-197, 1883-1941. Circ. New York Agric. Exp. Sta., Geneva. HI 57359
Circular, New York State College of Forestry at Syracuse University. Syracuse, NY. Nos. 1-60, 1912-29. Circ. New York State Coll. Forest. HI 77646
Circular of the New York State Museum. Albany, NY. Vols. 1-45 [vols. 3 and 4 not issued], 1928-56. Circ. New York State Mus. Superseded by: Circular, New York State Museum and Science Service. ULS 4-3045-3. HI 64242
Circular, New York State Museum and Science Service. Albany, NY. No. 46+, 1973+. Circ. New York State Mus. Sci. Serv. Preceded by: Circular of the New York State Museum. HI 64243
Circular of the New Zealand State Forest Service. Wellington, N.Z. Nos. 1-35, 1922-35. Circ. New Zealand State Forest Serv. HI 64244
Circular, North Carolina Agricultural Experiment Station. Raleigh, NC. Nos. 1-35, 1913-17. Circ. North Carolina Agric. Exp. Sta. HI 57444
Circular, North Carolina Division of Forestry. Raleigh, NC. No. 12+, 1925+. Circ. North Carolina Div. Forest. Preceded by: Circular, North Carolina Geological and Economic Survey. Raleigh, NC [not entered]. HI 80700
Circular, North Carolina State College [etc.] Agricultural Extension Service. Raleigh, NC. Nos. 1-607, 1915-84? Circ. North Carolina State Coll. Agric. Extens. Serv. Superseded by: Circular, North Carolina State University Agricultural Extension Service. Raleigh, NC. HI 82529
Circular, North Carolina State University Agricultural Extension Service. Releigh, NC. 1965+. Circ. North Carolina State Univ. Agric. Extens. Serv. Preceded by: Circular, North Carolina State College[etc.] Agricultural Extension Service. Raleigh, NC. HI 82599
Circular, North Dakota Agricultural Experiment Station. Fargo, ND. Nos. 1-73, 1914-46. Circ. North Dakota Agric. Exp. Sta. HI 57457
Circular note, Botanical Department of Trinidad. Port-of-Spain. No. ?-6+, 18??-94+. Circ. Note Bot. Dept. Trinidad. HI 64245
Circular, Office of Experiment Stations, United States Department of Agriculture. Washington, DC. Nos. 1-188, 1889-1913 [nos. 6, 9, 10 were not printed]. Circ. Off. Exp. Sta. U.S.D.A. HI 64246
Circular, Office of the Secretary, U S Department of Agriculture. Washington, DC. Nos. [1-2] 3-183, 1896-1921. Circ. Off. Secr. U.S.D.A. HI 60251
Circular, Ohio Agricultural Experiment Station. Wooster, OH. Nos. 1-156, 1888-1915. Circ. Ohio Agric. Exp. Sta. HI 81790
Circular, Oklahoma Agricultural Experiment Station. Stillwater, OK. Nos. 1-138, 1900-56. Circ. Oklahoma Agric. Exp. Sta. HI 57703
Circular, Oklahoma Agriculture and Mechanical College Extension Service. Stillwater, OK. Nos. 8-314-?, 191?-??-?? Circ. Oklahoma Agric. Mech. Coll. Extens. Serv. Preceded by: Extension bulletin, Oklahoma Agriculture and Mechanical College. Stillwater, OK. HI 82464
Circular, Ontario Department of Agriculture (and Food). Guelph, Ont. Nos. 1-57, 1916-40? Circ. Ontario Dept. Agric. Superseded by: Extension circular, Ontario Department of Agriculture and Food [not entered]. HI 79597
Circular, Oregon Agricultural Experiment Station. Corvallis, OR. Nos. 1, 4, 10, 19, 21-22, 1891-1911-1?. Circ. Oregon Agric. Exp. Sta. Superseded by: Station circular, Oregon Agricultural Experiment Station. Corvallis, OR. HI 57752
Circolare, Osservatore per le Malattie delle Piante. Sez. entomologia. Pisa. 1958+. Circ. Osserv. Malatt. Piante, Sez. Entomol. HI 64212
Circolare Osservatorio Regionale de Fitopatologia per la Calabria. Catanzaro. Vol. 1+, 1947+. Circ. Osserv. Regionale Fitopatol. Calabria. HI 53414
Circular, Pennsylvania Agricultural Experiment Station. State College, PA. No. 1+, 1916+. Circ. Pennsylvania Agric. Exp. Sta. HI 57867
Circular, Pennsylvania Department of Plant Industry. Harrisburg, PA. Nos. 1-114, 1927-30. Circ. Pennsylvania Dept. Pl. Industr. HI 80701
Circular, Puerto Rico Agricultural Experiment Station. Mayagüez, PR. Nos. 1-24, 1903-?? Circ. Puerto Rico Agric. Exp. Sta. Superseded by: Circular, Puerto Rico Federal Experiment Station. Mayagüez, PR. HI 58058
Circular, Puerto Rico Federal Experiment Station. Mayagüez, PR. Nos. 25-35, ?-1952. Circ. Puerto Rico Fed. Exp. Sta. Preceded by: Circular, Puerto Rico Agricultural Experiment Station. Mayagüez, PR. HI 82438
