TY  - BOOK
AU  - Mannan, M.A.
TI  - Co-ordinated soil test crop response correlation studies 1981-82: Second anual report 
U1  - 631.4 
PY  - 1983///
CY  - Dhaka
PB  - Bangladesh Agricultural research Council
KW  - Soil Science
N1  - Includes bibliography
ER  -