Materials in the economy: materials flows, scarcity, and the environment /
Wagner, Lorie A.
Materials in the economy: materials flows, scarcity, and the environment / Lorie A. Wagner - Washington : U.S. G.P.O., 2001 - iv, 29 p. : ill. (some colour0 maps ; 2001 - U.S. Geological Survey Circular; no.1221 .
Refrences: p.28-29
0607984120
Materials in the economy: materials flows, scarcity, and the environment / Lorie A. Wagner - Washington : U.S. G.P.O., 2001 - iv, 29 p. : ill. (some colour0 maps ; 2001 - U.S. Geological Survey Circular; no.1221 .
Refrences: p.28-29
0607984120
