TY  - BOOK
AU  - Ryan, John  .
TI  - Soil and plant analysis laboratory manual / 
SN  - 81-7233-498-2
U1  - J:1 
PY  - 2001///
CY  - Jodhpur : 
PB  - Scientific Publishers (India) , 
KW  - Soil and Plant Analysis
ER  -