TY  - BOOK
AU  - Ashman,M.R.
AU  - Puri,G.
TI  - Essential soil science: a clear and concise introduction to soil science 
SN  - 0632048859
PY  - 2002///
CY  - Oxford, Malden, MA
PB  - Blackwell Science
KW  - Soil science
N1  - Includes bibliographical references (p. [186]-190)
ER  -