TY - BOOK AU - Martin,Alexander Campbell AU - Uhler,F.M. TI - Food of game ducks in the United States and Canada T2 - Technical bulletin / United States Department of Agriculture AV - QL696.A5 M38 U1 - 630.6173598.41 PY - 1939///] CY - Washington, D.C. PB - U.S. Dept. of Agriculture, For sale by the Supt. of Docs. KW - Ducks KW - Food KW - United States KW - Canada N1 - Cover title; "March 1939."; Includes bibliographical references (p. 143-147) and index ER -