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

by Henry Fairfield Osborn

(42) Klaatsch, 1909.1.

(43) Bouyssonie, 1909.1.

(44) Boule, 1908.1; 1908.2; 1909.1; 1911.1; 1912.1.

(45) Boule, 1913.1.

(46) Martin, H., 1911.1.

(47) Nicolle, 1910.1.

(48) Keith, 1911.1.

(49) Fischer, 1913.1, p. 352.

(50) Schwalbe, 1914.1, p. 544, Figs. 4 and 5.

(51) Fischer, op. cit.