00503nam a22001817a 450000500170000000600040001700700040002100800040002502000150002904000090004405000170005310000230007024501080009326000530020130000190025450000190027365000290029220170725144142.0000000000  a1550590111  aUOEL  aTD170.2b.J6  aJohnson, Gordon K.  aEnvironmental tips :bhow you can save this planet /cGordon K. Johnson, illustrations by Cook and Miye  aAlberta :bDetselig Enterprises Limited,cc1990.  a169 p. :bill.  aincludes index  xEnvironmental Technology