00299nam a2200109 a 450000100080000000500110000800800410001910000200006024500490008026000420012965000180017120228972022-05-30       2015    bl uuuu     u00u1 u    #d1 aALVES, R. N. B.  aA balança ambiental.h[electronic resource]  aPortal Ecodebate, 24 ago. 2015.c2015  aMeio Ambiente