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Economic effects of irrigation : report of a survey of the direct and indirect benefits of the Godavari Pravara Canals
Gadgil, Dhananjaya Ramchandra, (1948)
The Boulder Canyon Project : Historical and economic aspects
Kleinsorge, Paul Lincoln, (1941)
The Nile : a general account of the river and the utilization of its waters
Hurst, Harold Edwin, (1952)
Actualidad de los riegos en EspaƱa
Ruiz-Zorrilla, Leopoldo Ridruejo, (1960)