Daffodils /
by David Griffiths.
- Washington, D.C. : U.S. Dept. of Agriculture, 1930.
- 74 p. : ill. ; 23 cm.
- Circular / United States Department of Agriculture ; no. 122 .
- Circular (United States. Department of Agriculture) ; no. 122. .
Caption title. "Contribution from Bureau of Plant Industry." "Revision of and supersedes U.S. Department of Agriculture. Bulletin 1270, The production of narcissus bulbs."