TY  - BOOK
AU  - Black and othsrs
TI  - Effects of phosphorus supplements on cattle grazing on range different in this mineral
U1  - 630.6173 
PY  - 1943///
CY  - Washington
PB  - U S dept. of agriculture
KW  - Phosphorus supplements,cattle gazing>
N1  - Assisted by L H Tash,J MJones and R J Kleberg
ER  -