Open AccessResin Canals in the Evolution of the Conifers
Author(s) -
E. C. Jeffrey
Publication year - 1925
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.11.1.101
Subject(s) - isotopes of strontium , strontium , laser ablation , scale (ratio) , in situ , subsistence agriculture , range (aeronautics) , evolutionary biology , biological system , geology , paleontology , mineralogy , ecology , materials science , chemistry , biology , geography , laser , cartography , physics , optics , organic chemistry , composite material , agriculture