Symbol of Wilderness Echo Park and the American Conservation Movement Harvey Mark W. T. Heftet / 2000 / Engelsk
Symbol of Wilderness Echo Park and the American Conservation Movement Harvey Mark W. T. Innbundet / 2015 / Engelsk
Spider Family Micropholcommatidae (Arachnida: Araneae: Araneoidea): A Relimitation and Revision at the Generic Level Rix Michael G. Heftet / 2010 / Engelsk
Wilderness Forever Howard Zahniser and the Path to the Wilderness Act Harvey Mark W. T. Innbundet / 2015 / Engelsk
Exploring the Tomato Transformations of Nature, Society and Economy Harvey Mark Innbundet / 2002 / Engelsk
Wilderness Forever Howard Zahniser and the Path to the Wilderness Act Harvey Mark W. T. Heftet / 2007 / Engelsk
