TY  - BOOK
AU  - Trudgill, Stephen T.
TI  - Soil and vegetation systems
SN  - 019874058 1
U1  - 631.87 
PY  - 1977///
CY  - Oxford 
PB  - Clarendon Press
KW  - apparatus,equipment, materials - Fertilizers, soil conditioners, growth regulators - Vegetable manures and converted household garbage -
KW  - Agriculture -
KW  - Specific techniques
N1  - Includes bibliogaphy and indexes
ER  -