000 00295nam a2200109Ia 4500
008 151015s9999 xx 000 0 und d
245 _aMan's influence on the hydrological cycle
260 _c1973
300 _aviii 71p.
500 _aFAO irrigation and drainage paper no- 17
942 _cFAO
_2udc
999 _c24041
_d24041