Library of Congress. Copyright Office, U.S. Copyright Renewals, 1951 July - December
“ JOINT EXECUTIVE COMMITTEE OF THE VOCATIONAL EDUCATIONAL COMMITTEES OF THE PULP AND PAPER INDUSTRIES OF THE UNITED STATES AND CANADA. SEE Joint textbook Committee of the Paper Industry of the United States and Canada.JOINT TEXTBOOK COMMITTEE OF THE PAPER INDUSTRY OF THE UNITED STATES AND CANADA. The manufacture of pulp and paper. J. Newell Stephenson, ed. Vol. 4: Preparation of rags and other fibers. © 2Jan24, A765652. ”
