00317nam a2200121Ia 4500003000400000008004100004020001400045040000800059100002200067245006200089260003100151300001300182LDD181029s9999    xx            000 0 und d  a471094234  cLDD  aSchwals, Glenn O. 0aSoil and water conservation engineeringcGlenn O. Schwals  aNew YorkbJohn Wileyc1981  axv, 525p