Harshberger, John W. 1869-1929 The Vegetation of South Florida South of 27 30 North, Exclusive of the Florida Keys Harshberger, John William Phytogeographic Survey Of North America: A Consideration Of The Phytogeography Of The North American Continent, Including Mexico, Central America And ... Of North American Plant Distribution Harshberger, John William Phytogeographic Survey Of North America: A Consideration Of The Phytogeography Of The North American Continent, Including Mexico, Central America And ... Of North American Plant Distribution
