Jackson, Robert Tracy 1861 books & textbook
Phylogeny of the Echini, with a Revision of Palaeozoic Species...
1861-1941, Jackson Robert Tracy
HardPress Publishing /2013-12-13 Paperback / 506 Pages
isbn-10: 131473508X / isbn-13: 9781314735086
Fossil Echini of the West Indies
Hardpress Publishing /2013-01-28 Paperback / 178 Pages
isbn-10: 1313001406 / isbn-13: 9781313001403
