BPH
Circular técnica, Centro de Pesquisa Agropecuária do Trópica Úmido. Belem. No. 1+, 1980+. Circ. Técn. Centro Pesquisa Agropecu. Trop. Úmido. HI 64250
Circular técnica, Instituto de Pesquisas e Estudos Florestais. Piracicaba. No. ?-179-186+, 19??-91-98+. Circ. Técn. Inst. Pesquisas Estudos Florest. HI 80705
Circular técnica, Unidade Regional de Pesquisa Florestal Centro-Sul. Curitiba. No. ?-4+, ?-1981+. Circ. Técn. Unid. Regional Pesquisa Florest. Centro-Sul. HI 64252
Circular, Tennessee Agricultural Experiment Station. Knoxville, TN. Nos. 1-111, 1926-55. Circ. Tennessee Agric. Exp. Sta. HI 64215
Circular, Tennessee Bureau of State Forestry. Nashville, TN. Nos. 1-14, 1922-33. Circ. Tennessee Bur. State Forest. HI 80706
Circular, Texas Agricultural Experiment Station. Austin, College Station, TX. Nos. 1-137, 1913-55 [numbers 1-22 are styled new series]. Circ. Texas Agric. Exp. Sta. HI 82522
Circular, Texas Forest Service. College Station, TX. Nos. 1-113, 1953-1968; n.s., no. 200+, 1969+. Circ. Texas Forest Serv. Incorporated: Bulletin, Texas Forest Service. College Station, TX. HI 75240
Circular, United States Department of Agriculture. Washington, DC. Nos. 1-982, 1927-58. Circ. U.S.D.A. Preceded by: Department circular, United States Department of Agriculture. Washington, DC. HI 60219
Circular, Umatilla Branch, Oregon Agricultural Experiment Station. Corvallis, OR. No. 1+, 1918+. Circ. Umatilla Branch Oregon Agric. Exp. Sta. HI 82326
Circular, University of Georgia Cooperative Extension Service. Athens, GA. 1960+. Circ. Univ. Georgia Coop. Extens. Serv. Preceded by: Circular, Georgia State College of Agriculture Extension Division. Athens, GA. ULS reference. ISSN 0092-2595 HI 81818
Circular, University of Hawaii Agricultural Extension Service. Honolulu, HI. Nos. 352-499, 1956-81. Circ. Univ. Hawaii Agric. Extens. Serv. Preceded by: Agricultural extension circular, University of Hawaii Agricultural Extension Service. Honolulu, HI. Superseded by: Circular, University of Hawaii Agricultural Extension Service. Honolulu, HI. HI 81724
Circular, University of Illinois Cooperative Extension Service. Urbana, IL. No. 510+, 1940?+. Circ. Univ. Illinois Extens. Serv. Preceded by: Circular, University of Illinois Agricultural Experiment Station. Urbana, IL. ULS reference. ISSN 0360-9812 HI 82492
Circular, University of Kentucky Cooperative Extension Service. Lexington, KY. Nos. ?-631?, ?-1971. Circ. Univ. Kentucky Coop. Extens. Serv. Preceded by: Extension circular, Kentucky Agricultural Experiment Station. Lexington, KY. HI 82536
Circular, University of Maine, Cooperative Extension Service. Orono, ME. No. 1+, 1913+. Circ. Univ. Maine Coop. Extens. Serv. HI 82302
Circular, University of Maryland Extension Service. College Park, MD. No. 1+, 1925+. Circ. Univ. Maryland Extens. Serv. HI 82499
Circular, University of Minnesota Agricultural Extension Division. St. Paul, MN. Nos. 1-59, 1919-37 Circ. Univ. Minnesota Dept. Agric. Extens. Div. HI 82556
Circular, University of Missouri Agricultural Extension Service. Columbia, MO. ?-1936+. Circ. Univ. Missouri Agric. Extens. Serv. HI 82574
Circular, University of Nevada Cooperative Extension Service. Reno, NV. Nos. 1-173?, 1956-63 [nos. 138, 139, 150, 154-56, 162-163 not published]. Circ. Univ. Nevada Coop. Expens. Serv. Superseded by: Publications, University of Nevada Cooperative Extension Service. Series C [circular series]. Reno, NV. HI 82349
Circular, University of Puerto Rico Agricultural Extension Service. Río Piedras. No. 1+, 1949+. Circ. Univ. Puerto Rico Agric. Extens. Serv. HI 82431
Circular, University of Vermont Agricultural Extension Service. Burlington, VT. No. 1+, 1915+. Circ. Univ. Vermont Agric. Extens. Serv. HI 82475
Circular of the Utah Agricultural Experiment Station. Logan, UT. Nos. 1-155, 1904-71. Circ. Utah Agric. Exp. Sta. HI 60261
Circular, Utah State University of Agriculture and Applied Science Extension Service. Logan, UT. No. 1+, 1913+. Circ. Utah State Univ. Agric. Appl. Sci. Extens. Serv. HI 82417
Circular, Vermont Agricultural Experiment Station. Burlington, VT. Nos. 1-15, 1909-33 [some numbers published in revised editions]. Circ. Vermont Agric. Exp. Sta. HI 60386
Circular, Virginia Agricultural Experiment Station. Blacksburg, VA. Nos. 1-8, 1908-09. Circ. Virginia Agric. Exp. Sta. HI 82482
Circular, Virginia Polytechnic Institute Agricultural Extension Service. Blacksburg, VA. Nos. ?-305-1065, ?-1947-68 [some numbers published in revised editions]. Circ. Virginia Polytechn. Inst. Agric, Extens. Serv. HI 58220
