000 00303nam a2200121Ia 45e0
008 181001s1955 xx 000 0 und d
100 _aRevert Schwab
245 0 _aSoil and water conservation Engg.
250 _a1955
260 _bJohn wely
_c1955
300 _a477
942 _2ddc
_cBK
999 _c2
_d2