Using honey bees to pollinate crops.
Series: United States. Dept. of Agriculture.; Leaflet no. 549; Leaflet (United States. Dept. of Agriculture) ;; no. 549.
Publisher: U.S. Govt. Print. Off.
Published: 1968
Place of publication: [Washington
Language: eng
Subjects: Honeybee.; Pollination by insects.; Fertilization of plants by insects.; Apis mellifera.