00372cam a2200169   450000500170000024500320001702000050004910000510005404400050010525000080011004100080011830000230012650000050014983000050015426000260015908200170018520260711133818.0  aEl Pensamiento Ecologistab  a  aNavarro, Ricardo, Pons GabrielAmaya, German E.  a  a1ª  aspa  a551 p. il:, 23 cm.  a  v  aSan SalvadorbCESTAc  a304.2bN322p