Open AccessPetrified Coals and Their Bearing on the Problem of the Origin of Coals
Author(s) -
E. C. Jeffrey
Publication year - 1917
Publication title -
proceedings of the national academy of sciences of the united states of america
Language(s) - English
Resource type - Journals
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.3.3.206
Subject(s) - longevity , history , demography , genealogy , biology , sociology , genetics