TY  - BOOK
AU  -  Johnson,Leon J.
TI  -  Introductory soil science : :  a study guide and laboratory manual / 
SN  -  0023611200
U1  -  Q 631.4 JOH 
PY  - 1979///
CY  -  New York : 
PB  -  Macmillan, 
KW  -  Soil science
KW  -  Laboratory manuals
N1  -  Includes bibliographical references
ER  -