TY  - BOOK
AU  - Balls, W. Lawrence.
TI  - The yields of a crop: based on an analysis of cotton-growing by irrigation in Egypt 
U1  - 631.5 
PY  - 1953///
CY  - London
PB  - E. & F. N. Spon
KW  - Cotton--growing
N1  - Includes bibliography and index
ER  -