Foreword
Introduction
Sign Language and Culture
Code and Culture
The American Sign Language Lexicon and Guidelines for the Standardization and Development of Technical Signs
Language Acquisition in Apes and Children
Sign Language in Chimpanzees
Language Skills, Cognition, and the Chimpanzee
Linguistic Capabilities of a Lowland Gorilla
Linguistic Potentials of Nonhuman Primates
Comments and Remarks