00329nam a2200121 a 450000500170000002000150001708200190003210000230005124500670007425000110014126000360015230000190018820251203091018.0  a0870942212  a333.7,bD, you  aYoungquist, Walter  aInvesting in natural resources:1980s guide to tomorrow's needs  a2nd ed  aHomewoodbDow Jones-Irwinc1980  axiv,281p, 22cm