Newbigin_Animal Geography, The Faunas of the Natural Regions of the Globe (1913)
Ramsay_The Physical Geology and Geography of Great Britain (1874)
Perry_The Physical Geography of Worcester, Massachusetts (1898)
Turnbull_The Fauna From the Terminal Pleistocene of Palegawra Cave, A Zarzian Occupation Site in Northeastern Iraq (1974)
Croghan_Rambles in the Mammoth Cave, During the Year 1844, By a Visitor (1845)
Swaine_Environment a Natural Geography
Tarr_First Book of Physical Geography (1898)
Somerville_Physical Geography (1849)1
Glacières or Freezing caverns (1900)_Edwin S. Balch
Cave-Fossil Vertebrates From Camaguey, Cuba
A Description of Howe's Cave_(1865)
A Preliminary Survey of the Bats of the Deerlodge National Forest Montana_1991 (1993)_Thomas W. Butts
A Guide Manual to the Mammoth Cave of Kentucky (1870, c1860)
Recent Cave Exploration in California (1906)
SCHUT, P.O_E. A. Martel, The Traveller who Almost Became an Academician - Cópia
Case_A Description of Models Illustrating the Physical Geography of Wisconsin (1907)
Hatch_The Physical Features and Geology of Borneo ([1892])
White_On the Geology and Physiography of a Portion of Northwestern Colorado and Adjacent Parts of Utah and Wyoming (1890)
Fairbanks_The Physiography of California (1901)
Antisell_Address on the Relations of Physical Geography to Agriculture .. (1859)