Ecological potential and cultural development in Mesosamerica, by Angel Palerm and Eric R. Wolf.
The Central North American grassland: man-made or ntural?, by Waldo R. Wedel.
Environment and culture in the Amazon Basin, an appraisal of the theory of environmental determinism, by Betty J. Meggers.
The ecology of human disease, by Jacques M. May.
Culture and environment in Interior Asia, by Lawrence Krader.