sponsored by the United Nations Institute for Training and Research (UNITAR) and Petro-Canada, in cooperation with United Nations Development Programme ... [et al.], November 26-December 7, 1979, Montreal, Quebec, Canada ; Joseph Barnea, scientific secretary ; R.F. Meyer, editor ; J.C. Olson, associate editor
Pitman
c1981
: set , v. 1 , v. 2 , v. 3
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