1. Cardiac Output During Muscular Work and Its Regulation
2. Barnett, L. A. and Wade, M. G. Children's play and the processing of information: Some preliminary data. Paper submitted for publication 1976. Champaign, Illinois 61820: University of Illinois. Copies available from L. A. Barnett, 97 Institute for Child Behavior and Development
3. Simultaneous Comparison of Respirometer and Heart-Rate Telemetry Techniques as Measures of Human Energy Expenditure
4. Introduction