Using honey bees to pollinate crops.
- [Washington, U.S. Govt. Print. Off., 1968]
- 7 p. illus. 24 cm.
- United States. Dept. of Agriculture. Leaflet no. 549 .
- Leaflet (United States. Department of Agriculture) ; no. 549. .
agr68000286
Honeybee. Pollination by insects. Fertilization of plants by insects. Apis mellifera.