TY  - BOOK
AU  - Stewart, B A
TI  - Advances in soil science. V 15
U1  - 631.4 
PY  - 1991///
CY  - Berlin
PB  - Springer
KW  - Agroforestry
KW  - Arbuscular Mycorrhizae
KW  - Crop residue
KW  - Soil science
KW  - Sustainable agriculture
ER  -