GEOLOGIC MAP OF THE ASHLAND QUADRANGLE, COLUMBIA AND SCHUYLKILL COUNTIES, PENNSYLVANIA. 1/24000.ARNDT HH.1971; U.S. GEOL. SURV., GEOL. QUADRANGLE MAPS; USA; 1971, NUM. 0918Miscellaneous

RESULTS OF EXPLORATORY DRILLING FOR LIGNITE IN 1978, FORT PECK INDIAN RESERVATION, ROOSEVELT COUNTY, MONTANA = RESULTATS DES SONDAGES D'EXPLORATION DE LIGNITE EN 1978, RESERVE INDIENNE DE FORT PECK, COMTE ROOSEVELT, MONTANAHARDIE JK; ARNDT HH.1981; OPEN-FILE REP. (U. S. GEOL. SURV. 1978); ISSN 0196-1497; USA; DA. 1981; NO 81-0786; 70; BIBL. 7 REF.; 16 ANAL.; 6 TAB. ; ILL.Serial Issue

GEOLOGIC MAP OF THE DELANO QUADRANGLE, SCHUYKILL COUNTY, PENNSYLVANIA. SCALE 1:24000.WOOD GH JR; ARNDT HH.1974; U.S. GEOL. SURV., GEOL. QUADRANGLE MAPS.; USA; 1974, NUM. 0001, P. 1Map

GEOLOGIC MAP OF THE SHENANDOAH QUADRANGLE SCHUYLKILL COUNTY, PENNSYLVANIA.WOOD GH JR; ARNDT HH.1969; U.S. GEOL. SURV., GEOL. QUADRANGLE MAPS; USA; 1969, NUM. 0781Miscellaneous

SYSTEMATIC JOINTING IN THE WESTERN PART OF THE ANTHRACITE REGION OF EASTERN PENNSYLVANIA.WOOD GH JR; ARNDT HH; CARTER D et al.1969; GEOL. SURV. U.S.A., BULL.; USA; 1969, NUM. 1271-00D , P. 1 A 17Miscellaneous

GEOLOGIC MAP OF THE SOUTH HALF OF THE SHAMOKIN QUADRANGLE, NORTHUMBERLAND AND COLUMBIA COUNTIES, PENNSYLVANIA. SCALE 1:24000.ARNDT HH; WOOD GH JR; SCHRYVER RF et al.1973; U. S. GEOL. SURV., MISC. GEOL. INVEST. MAP; USA; 1973, NUM. 0001-0734, P. 1Map