Macmillan1916The deposits of the useful minerals & rocks : their origin, form, and content / by F. Beyschlag, J.H.L. Vogt, P. Krusch ; translated by S.J. Truscott
vol. 2
by F. Beyschlag, J.H.L. Vogt, P. Krusch ; translated by S.J. Truscott
Macmillan1914The deposits of the useful minerals & rocks : their origin, form, and content / by F. Beyschlag, J.H.L. Vogt, P. Krusch ; translated by S.J. Truscott
vol. 1