TY  - BOOK
AU  -  Lotkowski,Wladyslaw M.
TI  -  The soil / 
U1  -  631.4077 
PY  - 1966///
CY  -  Chicago : 
PB  -  Educational Methods, 
KW  -  Soil science
N1  -  "Answer mask" laid in;  Includes bibliographical references and index
ER  -