00364nam a2200121Ia 450000500170000000800410001705000200005810000280007824500660010625000080017226000390018065000230021920251229192409.0251229s9999    xx            000 0 und d  aS 623 .S6 1966   aSchwan, G. O...[et al.] 0aSoil and water conservation engineeringcG. O...[et al Schwan  a2nd  aNew Yorkb John Wiley & Sonsc1981  aSoil Conservations