Boletín de la Sociedad Española de Historia Natural.

t. 16 (1916)

Boletín de la Sociedad Española de Historia Natural.

t. 14 (1914)

Boletín de la Sociedad Española de Historia Natural.

t. 9 (1909)

Boletín de la Sociedad Española de Historia Natural.

t. 7 (1907)

Boletín de la Sociedad Española de Historia Natural.

t. 20 (1920)

Boletín de la Sociedad Española de Historia Natural.

t. 18 (1918)

Boletín de la Sociedad Española de Historia Natural.

t. 22 (1922)

Boletín de la Sociedad Española de Historia Natural.

t. 8 (1908)

Report of the United States Geological Survey of the territories. F.V. Hayden, United States geologist in charge ... [Final reports or monographs. vol. I]-III, V-XIII.

9

Report of the United States Geological Survey of the territories. F.V. Hayden, United States geologist in charge ... [Final reports or monographs. vol. I]-III, V-XIII.

11

Report of the United States Geological Survey of the territories. F.V. Hayden, United States geologist in charge ... [Final reports or monographs. vol. I]-III, V-XIII.

12

Report of the United States Geological Survey of the territories. F.V. Hayden, United States geologist in charge ... [Final reports or monographs. vol. I]-III, V-XIII.

6

Report of the United States Geological Survey of the territories. F.V. Hayden, United States geologist in charge ... [Final reports or monographs. vol. I]-III, V-XIII.

8

Report of the United States Geological Survey of the territories. F.V. Hayden, United States geologist in charge ... [Final reports or monographs. vol. I]-III, V-XIII.

1

Report of the United States Geological Survey of the territories. F.V. Hayden, United States geologist in charge ... [Final reports or monographs. vol. I]-III, V-XIII.

10