@article{Kortlandt, author = {Kortlandt, Adriaan}, title = {The Use of (Rudimentar) Weapons by Apes and Man (Appendix I.), >Hunting< and >Predatory< Behavior in Chimpanzees and Man (Appendix II.),}, series = {Kortland, A.: New Perspectives on Ape and Human, Amsterdam 1972, pp. 79-91.}, journal = {Kortland, A.: New Perspectives on Ape and Human, Amsterdam 1972, pp. 79-91.}, language = {en} } @article{Kortlandt, author = {Kortlandt, Adriaan}, title = {Chimpanzees in the Wild.}, series = {Scientifi American Vol. 206 (1962), pp. 128-138.}, journal = {Scientifi American Vol. 206 (1962), pp. 128-138.}, language = {en} }