00359nam a2200133Ia 4500008004100000082001900041100002200060245003500082260004100117300001000158600001900168600001900187650001900206140113s9999    xx            000 0 und d  a631.44.001  L8  a" Emerson, W. W."  aModification of soil structure  b"New York : John Wiley & sons, 1978"  a438p.  a" Bond, R. D."  a" Bond, R. D."  aSoil structure