TY  - BOOK
AU  - Combs,Willis B.
AU  - Smith,Fred G.
TI  - Grain grading primer
T2  - Agriculture handbook / United States Department of Agriculture
AV  - SB189 .C687
U1  - 633.1 
PY  - 1953///
CY  - Washington, D.C.
PB  - U.S. Dept. of Agriculture
KW  - Grain
KW  - Grading
N1  - Slight revision of Miscellaneous publication 325; Bibliography:  p. 59-60
ER  -