Harshberger John William

The Vegetation Of The Yellowstone Hot Springs

The Vegetation Of The New Jersey Pine-Barrens: An Ecologic Investigation

Textbook Of Pastoral And Agricultural Botany

Phytogeographic Survey Of North America: A Consideration Of The Phytogeography Of The North American Continent, Including Mexico, Central America And

A Text-Book Of Mycology And Plant Pathology...

Phytogeographic Survey Of North America