- Author: Robert N. Emde, Marianne Leuzinger-Bohleber, Rolf Pfeifer
- Language: German
- Year: 2013
- Author: Gene P. Sackett (auth.) Robert N. Emde Robert J. Harmon (eds.)
- Language: English
- Year: 1982
- Author: Robert N. Emde Robert J. Harmon (auth.) Robert N. Emde Robert J. Harmon (eds.)
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- Year: 1984
- Author: Robert N. Emde John K. Hewitt
- Language: English
- Year: 2001