00892nam0-22003131i-450 99000172837040332120191002132801.00-916468-60-7000172837FED01000172837(Aleph)000172837FED0100017283720030910d1984----km-y0itay50------baengSoil erosionquiet crisis in the world economyLester R. Brown, Edward C. WolfWashingtonWorldwatch Institute198449 p.22 cmWorldwatch paper60Erosione631.45Brown,Lester Russell<1934- >33038Wolf,Edward C.74811ITUNINARICAUNIMARCLG99000172837040332160 OP. 163/211380FAGBCFAGBCSoil erosion1562064UNINA