000 002580000a22001210004500
245 _aWater quality for agriculture
100 _aAyers, R.S.
100 _aWestcot, D.W.
260 _aRome
_bFAO
_c1985
080 _a626.8
_bA9
041 _aEN
942 _cBK
999 _c62910
_d62910