RECYCLING

benefits: g75 6/22 29

garbage: g80 7/8 30

Germany (German Democratic Republic [East]): g80 8/22 30

metal cans: g71 8/8 30

organic waste: g71 10/22 29-30

paper: g72 5/22 30

role of bacteria: w80 8/1 23

scrap metal: g80 9/8 14

sewage: g73 1/22 30; g71 10/22 29; g71 11/22 29-30