Men of the Old Stone Age: Their Environment, Life and Art

by Henry Fairfield Osborn

(27) Avebury, 1913.1, pp. 2, 3.

(28) Lartet, 1861.1.

(29) Lartet, 1875.1.

(30) Breuil, 1912.7, p. 165.

(31) de Mortillet, 1869.1.

(32) Piette, E., 1907.1.

(33) Rivière 1897.1.

(34) de Sautuola, 1880.1.

(35) Schmidt, 1912.1.

(36) Bourgeois, 1867.1.