na INLIS000000000009506 Ind 0010-1118009506 631.4 631.4SHUp R.S. Shukla and P.S. Chandel Plant ecology and soil science SHUKLA, R.S. New Delhi S. Shand 1977 iv, 285 p.: ill.; 22 cm. iv, 285 p.: ill.; 22 cm. ECOLOGY SOIL SCIENCE 749/79