000 00409nam a2200133Ia 45e0
008 181001s1955 xx 000 0 und d
100 _aFrenrt Schwah
245 0 _aSoil & water conservation engg.
250 _a1955
260 _c1955
300 _a479
942 _2ddc
_cBK
999 _c242
_d242