by Helfferich, Friedrich | .
by Jennings, Walter G Ed | .
by Lawless, Edward W | .
by Walker, P L Ed | .
by Le Noble, William J | .
by Padwa, A Ed | .
by Weiv , B S | .
by Mal , Goseph N M | .
by Mendel Friedman | .
by Dinkar K. Kasberkar | .
by Lawrence J. Machlin | .
by C. Ralph Buncher | J.La. Yeong.
by Steven L. Taylor | Richard A. Scanlan.
by Sheldon Reiser | .
by Edward J. Wegman | James G. Smith.
by Leonard L. Ciaccio | .
by Paul N. Cheremisinoff | .
by J.M. Marchello | .
by Malcolm L. Siegel | Hugh D. Sister.
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