000 00322nam a2200121Ia 4500
008 170101s1989 xx 000 0 und d
082 _a631.7 PER
100 _aPereira, H.C
245 0 _aPolicy and practicein the management of tropical watersheds
260 _aDehra Dun
_bIBD
_c1989
300 _a237p.
942 _2ddc
_cBK
999 _c46631
_d46631