By Ongley, Edwin D.. Rome FAO 1996 . 1 v. (pag. var.) 30 cm. 9251038759
Rome FAO 1998 . 1 v. (pag. var.) 30 cm. 9251042195
By Dieleman, P.J.. Roma FAO 1976 . IX, 140 p. 30 cm. 9253000163
By Dougherty, T.C.. Rome FAO 1995 . 1 v. (pag. var.) , Documento disponible en: http//:www.fao.org/docrep/V8350E/V8350E00.htm (consultado: 5/11/01) 30 cm. 9251037310
Place Hold on Environmental impact assessment of irrigation and drainage projects
Rome FAO 1971 . VI, 254 p. 30 cm.
By Rhoades, James D.. Rome FAO 1999 . xiv, 150 p. 30 cm. 9251042810