DP - MPI Library TY - JOUR AU - Andrew, R. J. T1 - The Origin and Evolution of the Calls and Facial Expressions of the Primates UR - https://www.jstor.org/stable/4533025 T2 - Behaviour SP - Vol. 20, No. 1/2 (1963), p. 1-109 PY - 1963 N1 - Copyright: Copyright 1963 E. J. Brill ER -