TY  - BOOK
AU  - Ryan, John
AU  - Estefan, George
AU  - Rashid, Abdul
TI  - Soil and plant analysis laboratory manual: John Ryan 
SN  - 9788172337650
AV  - S593 .R93 2001
PY  - 2001///
CY  - Jodhpur
PB  - Scientific publishers
KW  - Soil analysis--Manuals
ER  -