Koegel, R.G.
Self-help wells by R.G.Koegel - Rome FAO 1977 - viii, 78 pages - FAO irrigation and drainage paper No. 30 .
Include references
925100398X
Irrigation
Wells
631.587 / KOE
Self-help wells by R.G.Koegel - Rome FAO 1977 - viii, 78 pages - FAO irrigation and drainage paper No. 30 .
Include references
925100398X
Irrigation
Wells
631.587 / KOE