000			00333nam a2200133Ia 4500
008			151015s9999 xx 000 0 und d
020			_a9251029768
100			_aSheng, T. C.
245			_aWatershed management field manual
260			_c1990
300			_aix 170p.
500			_aFAO conservation guide no- 13/6
942			_cFAO _2udc
999			_c24269 _d24269