Hoffmann, G Christian (George Christian books & textbook
Paper on the Eucalypts of Australia
Hoffmann, G Christian (George Christian
Wentworth Press /2016-08-27 Hardcover / 44 Pages
isbn-10: 1371552622 / isbn-13: 9781371552626
Chemical Contributions to the Geology of Canada [microform]: Coals and Lignites of the North-West Territory
Hoffmann, G Christian (George Christ Geological and Natural History Survey
Legare Street Press /2021-09-09 Paperback / 68 Pages
isbn-10: 1013564359 / isbn-13: 9781013564352
