TY  - BOOK
AU  - Butzer Karl W
TI  - Early hydraulic civilization in Egypt :  A study in   
T2  - Prehistoric Archeology and Ecology Series Ed by Karl W Butzer and Leslie G Freeman
U1  - Y:1.677.C, L6 
PY  - 1976///
CY  - Chicago
PB  - University of Chicago Press       
N1  - Bibliography : P 113-134
ER  -