The Carboniferous Formations and Faunas of Colorado

Feeding Ecology of the Hawksbill Turtle (Eretmochelys Imbricata)

[Spongivory as a Feeding Niche in the Coral Reef Community]

The Animals of North America

Code International De Nomenclature Zoologique

[Adopté Par Le XVe Congrès International De Zoologie. International Code of Zoological Nomenclature, Adopted by the XV International Congress of Zoology]

The Story of Our Planet

Story of Our Planet

The Story of Our Planet

Story of Our Planet

The Story of Our Planet

Story of Our Planet

The Story of Our Planet

Story of Our Planet

The Preparation of the Earth, for the Intellectual Races

[A Lecture Delivered at Sacramento, California, April 10, 1954, at the Invitation of the House of Assembly.]

Preparation of the Earth, for the Intellectual Races

The Preparation of the Earth, for the Intellectual Races

[A Lecture Delivered at Sacramento, California, April 10, 1954, at the Invitation of the House of Assembly.]

Preparation of the Earth, for the Intellectual Races

Niagara

[Its History and Geology, Incidents and Poetry.]

Niagara

[Its History and Geology, Incidents and Poetry]