TY  - BOOK
AU  - Barber,Stanley Arthur
AU  - Sprague,Howard Bennett
ED  - Symposium on hunger signs in crops
ED  - American Society of Agronomy.
TI  - Hunger signs in crops : a symposium
AV  - SB742 .H8 1964
U1  - 581.13 SYM 1964 
PY  - 1964///]
CY  - New York  
PB  - McKay 
KW  - Deficiency diseases in plants
N1  - Previous editions by the American Society of Agronomy; Includes bibliographies
ER  -