Hamm, Hans W.
Low cost development of small water power sites by Hans W. Hamm - Mount Rainier, Maryland Volunteers in Technical Assistance 1967 - iii, 43 p. ill. 22 cm
Hydraulic engineering
Water-power
Low cost development of small water power sites by Hans W. Hamm - Mount Rainier, Maryland Volunteers in Technical Assistance 1967 - iii, 43 p. ill. 22 cm
Hydraulic engineering
Water-power