The purely spatial approaches

7-26

Grounding three-dimensionality in motion

27-56

Argument for three-dimensionality from laws of force

57-68

Causalistic explanations and three-dimensionality

69-82

The biological and perception-theoretical approaches

83-109

Euclid's heritage

a review of the history of the problem

Peter Janich

110-115

Knowledge about space

121-135

The construction of the terminology

136-172

The spatial concept of dimension and its universality

173-208