Soil and soil conservation in Sri Lanka
Thenabadu, Mervyn W.
Soil and soil conservation in Sri Lanka - Colombo Natural Resources Energy and Science 1988 - 113 p. Illustration 21 - Science Education Series No. 28 .
SOIL SCIENCE
631.45 / THE
Soil and soil conservation in Sri Lanka - Colombo Natural Resources Energy and Science 1988 - 113 p. Illustration 21 - Science Education Series No. 28 .
SOIL SCIENCE
631.45 / THE