TY  - BOOK
AU  - Singh, R.P.
AU  - Parr, J.F.
AU  - Singh, R.P.
AU  - Stewart, B.A.
TI  - Advances in Soil Science vol. 13: Dryland Agriculture strategies for sustainablity
PY  - 1990///
CY  - New York
PB  - sprigner verlag
ER  -