Velde, Vander.J Edward.
Irrigation managment in Pakistan mountain environments Edward J. Vander Velde - Pakistan International irrigation managment institute 1989 - 33 p.
92-9090-152-7
631.7 / VEL
Irrigation managment in Pakistan mountain environments Edward J. Vander Velde - Pakistan International irrigation managment institute 1989 - 33 p.
92-9090-152-7
631.7 / VEL