"Int. - Bu. of Mines, Pgh., Pa."--P. 15."March 1954."Includes bibliographical references.Mode of access: Internet
"Interior - Bureau of Mines, Pittsburgh, Pa."--P. 11."May 1951."Mode of access: Internet
"From the Proceedings of the Academy of Natural Sciences of Philadelphia, May-October, 1920 ..."Incl...
"This book is a collection of articles that have previously been printed in the engineering and mini...
"Interior-Bureau of Mines, Pittsburgh, Pa."--p. 8."August 1951."Includes bibliographical references....
Paper presented at Sixth International Conference of Directors of Mine Research, Paris, France, July...
"Int. - Bu. of Mines, Pgh., Pa."--p. 13."January 1954."Includes bibliographical references (p. 13).M...
Work done under cooperation with the Youngstown Mines Corp. and the Powellton Coal Co."February 1957...
"Interior-Bureau of Mines, Pittsburgh, Pa."--Colophon."September 1951."Mode of access: Internet
"Reprinted 1991"--Cover.Includes bibliographical references (p. 48).Mode of access: Internet
"Second in series of roof reports on roof movement in coal mines."Mode of access: Internet
"October 2003."Includes bibliographical references (p. 31-32).Mode of access: Internet
"Int. - Bu. of Mines, Pgh., Pa."--p. 13."October 1952."Includes bibliographical references.Mode of a...
"February, 1930."Includes bibliographical references (page xx).Mode of access: Internet
"March 1948."Cover title.Includes bibliographical references.Mode of access: Internet
"March 1950."Includes bibliographical references (p. 52).Mode of access: Internet
"Interior - Bureau of Mines, Pittsburgh, Pa."--P. 11."May 1951."Mode of access: Internet
"From the Proceedings of the Academy of Natural Sciences of Philadelphia, May-October, 1920 ..."Incl...
"This book is a collection of articles that have previously been printed in the engineering and mini...
"Interior-Bureau of Mines, Pittsburgh, Pa."--p. 8."August 1951."Includes bibliographical references....
Paper presented at Sixth International Conference of Directors of Mine Research, Paris, France, July...
"Int. - Bu. of Mines, Pgh., Pa."--p. 13."January 1954."Includes bibliographical references (p. 13).M...
Work done under cooperation with the Youngstown Mines Corp. and the Powellton Coal Co."February 1957...
"Interior-Bureau of Mines, Pittsburgh, Pa."--Colophon."September 1951."Mode of access: Internet
"Reprinted 1991"--Cover.Includes bibliographical references (p. 48).Mode of access: Internet
"Second in series of roof reports on roof movement in coal mines."Mode of access: Internet
"October 2003."Includes bibliographical references (p. 31-32).Mode of access: Internet
"Int. - Bu. of Mines, Pgh., Pa."--p. 13."October 1952."Includes bibliographical references.Mode of a...
"February, 1930."Includes bibliographical references (page xx).Mode of access: Internet
"March 1948."Cover title.Includes bibliographical references.Mode of access: Internet
"March 1950."Includes bibliographical references (p. 52).Mode of access: Internet
"Interior - Bureau of Mines, Pittsburgh, Pa."--P. 11."May 1951."Mode of access: Internet
"From the Proceedings of the Academy of Natural Sciences of Philadelphia, May-October, 1920 ..."Incl...
"This book is a collection of articles that have previously been printed in the engineering and mini...