TY  - BOOK
AU  - Jones,Gareth, x
AU  - x
TI  - Vegetation productivity: x 
SN  - x  
U1  - 581.9/JOV  
PY  - 1979///
CY  - London 
PB  - Longman 
KW  - Vegetables
KW  - Botany
ER  -