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

by Henry Fairfield Osborn

(17) Lartet, 1875.1.

(18) Verneau, 1886.1; 1906.1, pp. 68, 69.

(19) Obermaier, 1912.2.

(20) Martin, R., 1914.1, pp. 15, 16.

(21) Keith, 1911.1, p. 71.

(22) Klaatsch, 1909.1.

(23) Keith, op. cit., p. 56.

(24) Hauser, 1909.1.

(25) Fischer, 1913.1.

(26) Schliz, 1912.1, p. 554.