Farmdale Drift in Northwestern Illinois (Classic Reprint) Shaffer, Paul Raymond Innbundet / 2019 / Engelsk
Extension of Tazewell Glacial Substage of Western Illinois and Eastern Iowa (Classic Reprint) Shaffer, Paul Raymond Innbundet / 2019 / Engelsk
Farmdale Drift in Northwestern Illinois (Classic Reprint) Shaffer, Paul Raymond Heftet / 2019 / Engelsk
Extension of Tazewell Glacial Substage of Western Illinois and Eastern Iowa (Classic Reprint) Shaffer, Paul Raymond Heftet / 2019 / Engelsk
