TY  - BOOK
AU  - MEKHA M.G
AU  - Dr.SUMAM GEORGE 
TI  - BIOLOGICAL INDICATORS OF SOIL HEALTH AS INFLUENCED BY PLANT NUTRIENT SOURCES 
U1  - E P13 ME 146 
PY  - 2013///
CY  - COLLEGE OF AGRICULTURE VELLAYANI 
PB  - DEPARTMENT OF SOIL SCIENCE AND AGRICULTURAL CHEMISTRY 
ER  -