TY  - BOOK
AU  - Spedding, C.R.W.
TI  - Biology of Agricultural Systems
SN  - 0126565503
U1  - 630 
PY  - 1975///
CY  - London
PB  - Academic Pressw
KW  - Agriculture and related technologies
KW  - Technology (Applied sciences)
KW  - Agriculture
ER  -