title: Loud calls of male purple-faced langurs (Presbytis senex).
authors: Max Planck Institute for Psychiatry, Munich, FRG.
authors: G
authors: G
authors: Hohmann
mesh_terms: D000818:Animals; D002520:Cercopithecidae / Q000502:physiology*; D008297:Male; D013018:Sound Spectrography; D013637:Tape Recording; D014828:Vocalization, Animal