Concepts of informal geometry
By: by Richard D. Anderson ; written for the School Mathematics Study Group.
Edition: Prelim. ed. --
Series: Studies in mathematics ; v. 5; Studies in mathematics (School Mathematics Study Group) -- v. 5.
Publisher: Yale University
Published: 1960
Place of publication: [New Haven]
Language: eng
Subjects: Geometry, Non-Euclidean.; Geometry.; Mathematics -- Study and teaching