Countertrade /
Welt, Leo G. B., 1934-
Countertrade / by Leo G.B. Welt - xv, 185 pages : illustrations ; 30 cm
090312176X
Countertrade
Barter
HF1414.3 / .W45 1985
Countertrade / by Leo G.B. Welt - xv, 185 pages : illustrations ; 30 cm
090312176X
Countertrade
Barter
HF1414.3 / .W45 1985