كتب بواسطة G. Christian Hoffmann - BookPine

Contributions Chimiques A la Géologie du Canada, du Laboratoire de la Commission

Contributions Chimiques A la Géologie du Canada, du Laboratoire de la Commission

G. Christian Hoffmann

Report on Canadian Graphite

Report on Canadian Graphite

G. Christian Hoffmann

Contributions Chimiques à la Géologie du Canada: Houilles Et Lignites du Territoire du Nord-Ouest

Contributions Chimiques à la Géologie du Canada: Houilles Et Lignites du Territoire du Nord-Ouest

G. Christian Hoffmann

Report of the Section of Chemistry and Mineralogy

Report of the Section of Chemistry and Mineralogy

G. Christian Hoffmann

Report of the Section of Chemistry and Mineralogy by G. Christian Hoffman; assistants: F.G. Wait, R.A.A. Johnston. 1903

Report of the Section of Chemistry and Mineralogy by G. Christian Hoffman; assistants: F.G. Wait, R.A.A. Johnston. 1903

G. Christian Hoffmann

Chemical Contributions to the Geology of Canada From the Laboratory of the Survey

Chemical Contributions to the Geology of Canada From the Laboratory of the Survey

G. Christian Hoffmann

Paper on the Eucalypts of Australia

Paper on the Eucalypts of Australia

G. Christian Hoffmann

Annotated List of the Minerals Occuring in Canada

Annotated List of the Minerals Occuring in Canada

G. Christian Hoffmann

Chemical Contributions to the Geology of Canada. From the Laboratory of the Survey

Chemical Contributions to the Geology of Canada. From the Laboratory of the Survey

G. Christian Hoffmann

Chemical contributions to the geology of Canada

Chemical contributions to the geology of Canada

G. Christian Hoffmann

$Report on Canadian Graphite: With Special Reference to Its Employment as a Refractory Material$

Report on Canadian Graphite: With Special Reference to Its Employment as a Refractory Material

G. Christian Hoffmann