00915nam0-22003011i-450-99000146662040332120061115141013.0000146662FED01000146662(Aleph)000146662FED0100014666220010214d1970----km-y0itay50------baengGBa---a---001yyWhat should we do with our Planet Earth? An appeal to all young peopleMario PavanPaviaTipografia Mario Ponzio197028 p.25 cmEcologiaPavan,Mario<1918-2003>327008Italia.Ministero dell'agricoltura e delle foresteITUNINARICAUNIMARCBK9900014666204033216 I 56DBVDBVWhat should we do with our Planet Earth? An appeal to all young people379166UNINA