Book Reviewed in this article:

Schildberger, K. & Eisner, N. (eds) 1994: Neural basis of behavioural adaptations

Turner, D. C. 1995: Die Mensch-Katze-Beziehung. Gustav Fischer-Verlag Jena, Stuttgart

Noldus Information Technology (ed.) 1995: The Observer 3.0, a software package for behavioural observations

Frank, H. & Althoen, S.C. 1994: Statistics — concepts and applications

Frank, H., Althoen, S.C. & Siefert, A.C. 1994: Instructor's manual for statistics — concepts and applications

Frank, H. & Althoen, S.C., 1994: User-friendly workbook and ASP tutorial to accompany ‘Statistics — concepts and applications’

Salthe, S. N. 1993: Development and evolution — complexity and change in biology