BPH
Onira; botanical leaflets. Santiago, Chile. Ca. 1989+. Onira. HI 69187
Online gardener. Watkinsville, GA. Vol. 1+, 1985+. Online Gard. HI 69188
Ontario conservation news. Toronto. Vol. 3(4)+, 1975+. Ontario Conservation News. Preceded by: Conservation news, Conservation Council of Ontario. HI 69189
Ontario field biologist. Willowdale, Toronto, Ont. No. 1+, 1955+. Ontario Field Biol. ULS reference. ISSN 0078-4834 HI 57720
Ontario natural science bulletin; journal of the Wellington Field Naturalists' Club. Guelph, Ont. Vols. 1-8, 1905-13. Ontario Nat. Sci. Bull. ULS 4-3181-3. HI 57721
Ontario naturalist. Don Mills, Ont. Vols. 1-19(4), 1969-79. Ontario Naturalist. Preceded by: Bulletin, federation of Ontario naturalists. Superseded by: Seasons. HI 69190
Ontogenez. Moscow. Vol. 1+, 1970+. Ontogenez. HI 69191
Öntözésügyi közlemények. Budapest. Vols. 1-8, 1938-46 [1947]. Öntözésügyi Közlem. HI 57722
Onze stekelige vrienden. Bonheiden. 1987+. Onze Stekel. Vrienden. HI 69192
Onze tuinen; geillustreerd weekblad. Haarlem. Vols. 1-25, 1906-30. Onze Tuinen. HI 57723
Open gates. Fontana, CA. 1966+. Open Gates. HI 69193
Opera botanica a Societate Botanice Lundensi. Lund, Copenhagen. Vols. 1-59, 1953-80. Opera Bot. Vols. 52-59, Oct. 1979 - Dec. 1980 issued as: Botaniska notiser. Supplement. Lund. ULS reference. ISSN 0078-5237 HI 69196
Opera botanica Belgica. Meise. Vol. 1+, 1988+. Opera Bot. Belg. ULS reference. ISSN 0775-9592 HI 69194
Opera botanica Čechica. Prague. Vols. 1-6, 1939-48. Opera Bot. Čech. HI 69195
Opera botanicSeries B. Flora of Ecuador. Gothenberg. Nos. 1-4, 1973-75. Opera Bot., B. [“Flora of Ecuador,” no. 5+, continued as a series of monographic publications.] ULS reference. ISSN 0078-5237 HI 69197
Opera Corcontica. Vrchlabi. Vols. 1-20-?, 1964-83-?? Opera Corcontica. HI 57724
Opera Lilloana. Tucumán. Vol. 1+, 1957+. Opera Lilloana. HI 57725
Operation report of Saga Fruit Tree Experiment Station. [Saga-ken kaju shikenjo gyomu nempo.] Saga. 1970+. Operat. Rep. Saga Fruit Tree Exp. Sta. HI 74465
Operculum; a publication of the Australian Littoral Society. Toowong, Qld. Vol. 1+, 1971+. Operculum. Preceded by: Newsletter, Queensland Littoral Society. HI 69198
Opetatud eesti seltsi toimetused. Tartu. Vols. 24-32, 1927-40. Opet. Eesti Seltsi Toimet. Preceded by: Verhandlungen der Gelehrten Esthnischen Gesellschaft zu Dorpat. Dorpat. ULS 5-4154-3. HI 57726
Ophelia. Helsingor. Vol. 1+, 1964+. Ophelia. Superseded by: Marine biology research. Oslo. ULS reference. ISSN 0078-5326 HI 57727
Ophthalmologische Klinik. Stuttgart. Vols. 1-12, 1897-1908. Ophthalmol. Klin. ULS 4-3185-3. HI 57728
Opora; eine Zeitschrift zur Beförderung des Obstbaues in Deutschland. Zittau. Vols. 1-3, 1835-38. Opora. Superseded by: Für Freunde des Obstbaues. Dresden & Leipzig. ULS 4-3186-3. HI 57729
Optima. Johannesburg. Vol. 1+, 1950+. Optima. HI 57730
Options méditerranéennes; revue des problèmes agricole Méditerranéennes. Paris. N.s., vol. 1+, 1970+. Options Médit. Preceded by: Mediterranea. Paris. HI 69199
