Pennsylvania Glaciation First Phase: Materials for a Discussion of the Attenuated Border of the Moraine Described in Volume Z of the Second, Geological Survey of Pennsylvania (Classic Reprint) Williams, Edward Higginson Heftet / 2019 / Engelsk
Robert Williams of Roxbury, Mass., And His Descendants: Four Generations (Classic Reprint) Williams, Edward Higginson Innbundet / 2018 / Engelsk
Robert Williams of Roxbury, Mass., And His Descendants: Four Generations (Classic Reprint) Williams, Edward Higginson Heftet / 2018 / Engelsk
Pennsylvania Glaciation First Phase: Materials for a Discussion of the Attenuated Border of the Moraine Described in Volume Z of the Second, Geological Survey of Pennsylvania (Classic Reprint) Williams, Edward Higginson Innbundet / 2019 / Engelsk