WORKABLE COMPETITION IN THE NATIONAL ENERGY SECTOR.SCHENCK GHK.sdPROC. PENNSYLVANIA ACAD. SCI.; U.S.A.; (PENNSYLVANIA ACAD. SCI. ANNU. BUS. MEET. 51. PROC.; GROVE CITY, PA.; 1975),1975, VOL. 49, NUM. 0001, P. 37 A 39Miscellaneous

FUTURE U.S. SUPPLIES AND DEMANDS FOR LEADMACKALLOR JA; SCHENCK GHK.1975; IN: COUNC. ECON. AM. INST. MIN., METALL. PET. ENG. ANNU. MEET. 104. PROC.; NEW YORK; 1975; NEW YORK; AM. INST. MIN. METALL. PET. ENG.; DA. 1975; PP. 193-204; BIBL. 15 REF.; 3 ILL.Conference Paper

FUTURE U.S. SUPPLIES AND DEMANDS FOR LEAD.MACKALLOR JA; SCHENCK GHK.sdIN: COUNC. ECON. AM. INST. MIN., METALL. PET. ENG. ANNU. MEET. 104. PROC.; NEW YORK; 1975; NEW YORK AM. INST. MIN. METALL. PET. ENG.,1975, P. 193 A 204Miscellaneous