E. Hammerman

Research based objectives for environmental education: Consensus on the past; a base for the future

Alan M. Voelker, Elizabeth Hammerman, A. M. Voelker, 1987 .

A DELPHI FORMULATION OF ENVIRONMENTAL EDUCATION OBJECTIVES.

E. Hammerman, 1979 .

Microprocessor-assisted screening techniques.

B D Sollish, E. Frei, E H Frei, 1981, Israel journal of medical sciences.

What Basic Needs Are Met Through Outdoor Education

Donald R. Hammerman, E. Hammerman, 1985 .