TY  - BOOK
AU  - Schwad, Glenno  .
AU  - Fangmeier,Delmar D  .
TI  - Soil and water conservation enginering / 
U1  - 631.45 
PY  - 1981///
CY  - London : 
PB  - John Wiley & Sons , 
N1  - Reference **
ER  -