00490nam a2200181Ia 450000500170000000800410001704000060005804100110006408200230007510000320009810000270013011000160015724500650017326000260023830000120026465000230027665100090029920260814105658.0260814t1987    xx            000 0 und d  a2  acompra  aBIB/04.01.02/04499  aAndaluz Westreicher, Carlos  aValdez Muñoz, Walter  aGREDES-Lima 0aDerecho ecológico peruano : inventario normativo 1900-1987  aLima :bGREDES,c1987  a308 pb  a DERECHO AMBIENTAL  aPERU