TY  - GEN
AU  - HERREN, RAY V
TI  - THE SCIENCE OF AGRICULTURE: A BIOLOGICAL APPROACH
U1  - 630 HER/SC 
CY  - CANADA, THOMSON
KW  - CELLS: AGRICULTURES BUILDING BLOCKS
KW  - SCIENCE OF AGRICULTURE
KW  - SOIL: SOURCE OF LIFE
ER  -