Space and geometry
Mach, Ernst
Space and geometry in the light of physiological, psychological and physical inquiry. - La Salle, Ill. The Open court publishing company 1943 [c1906] - 148 p. illus.
Space perception.
Geometry--Foundations.
Space and geometry in the light of physiological, psychological and physical inquiry. - La Salle, Ill. The Open court publishing company 1943 [c1906] - 148 p. illus.
Space perception.
Geometry--Foundations.