7 Pages in Charles Darwin's Library associated with "social behaviour: play"

De la physionomie et des mouvements d'expression
By: Gratiolet, Pierre.
Publication info: Paris, J. Hetzel, 1865
Pages: Page 37 Page 289
Evidence as to man's place in nature
By: Huxley, Thomas Henry,
Publication info: London, Williams & Norgate, 1863
Pages: Page 43
Inquiries concerning the intellectual powers and the investigation of truth
By: Abercrombie, John.
Publication info: London, John Murray, 1838
Pages: Page 163 Page 163
Naturgeschichte der Saeugethiere von Paraguay
By: Rengger, Johann Rudolph.
Publication info: Basel, Schweighauser, 1830
Pages: Page 125
On the domesticated animals of the British islands
By: Low, David.
Publication info: London, Longman, Brown, Green & Longmans, 1845
Pages: Page 650