TY  - BOOK
AU  - Wopereis, M. [et al.]
TI  - Soil physical properties : measurement and use in rice-based cropping systems 
SN  - 9712200485
PY  - 1994///
CY  - Laguna
PB  - International Rice Research Institute
KW  - Soil ChemistrySoil FertilitySoil Sciences
ER  -