"stern, peter . "
small-scale irrigation: / peter.. stern - 1 ed. - uk : intermediate technology 1989. - ", 151p.; 22 cm."
0 903031 64 7
631. 7 ste
small-scale irrigation: / peter.. stern - 1 ed. - uk : intermediate technology 1989. - ", 151p.; 22 cm."
0 903031 64 7
631. 7 ste