00275nam a2200121Ia 450000500170000000800410001704100080005808200150006610000150008124500300009626000190012630000080014520260720174728.0260720s1986    xx            000 0 und d  aeng  a372.8 PIRO  aPirkle E C  aOur physical enviournment  aNew Yorkc1986  a62p