00289nam a2200109 a 450000500170000002000150001708200230003210000200005524500530007526000280012830000230015620251203090451.0  a0030604192  a333.91160973,bBLA  aBlack, Peter, E  aConservation of water and related land resources  aNew York: Praegerc1982  axxii, 209p.c22cm.