@article{Kortlandt1972, author = {Adriaan Kortlandt}, title = {The Use of (Rudimentar) Weapons by Apes and Man (Appendix I.), >Hunting< and >Predatory< Behavior in Chimpanzees and Man (Appendix II.),}, journal = {Kortland, A.: New Perspectives on Ape and Human, Amsterdam 1972, pp. 79-91.}, year = {1972}, }