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Lead and zinc : report to the President, 1962 under Executive Order 10401
(1962)
Lead and zinc : report ot the President on Escape-Clause Investigation no. 65 under the provisions of section 7 of the Trade Agreements Extension Act of 1951, as amended
(1958)
Lead and zinc : report to the President on investigation No TEA-IA-3 under section 351, d, 2 of the Trade Expansion Act of 1962
(1965)
Capital expenditures survey, Pittsburgh metropolitan area, 1957-1960
Weidenhammer, R. M., (1957)