"ahmad, yusuf j. "
desertification:finanical support for the biosphere: / yusuf.j. ahmad - 1 ed. - uk : hodder and stoughton 1987. - "xviii, 187p.; 24 cm."
0 340 41044 2
--
574. 536 52 ahm
desertification:finanical support for the biosphere: / yusuf.j. ahmad - 1 ed. - uk : hodder and stoughton 1987. - "xviii, 187p.; 24 cm."
0 340 41044 2
--
574. 536 52 ahm