A gateway to modern geometry :
Stahl, Saul.
A gateway to modern geometry : the Poincaré half-plane / Saul Stahl. - 2nd ed. - Sudbury, Mass. : Jones and Bartlett Publishers, c2008. - viii, 255 p. : ill. ;
Rev. ed. of: Poincaré́́ half-plane. Boston : Jones and Bartlett Publishers, c1993.
9780763753818 0763753815
Geometry, Non-Euclidean.
514.13 / STA
A gateway to modern geometry : the Poincaré half-plane / Saul Stahl. - 2nd ed. - Sudbury, Mass. : Jones and Bartlett Publishers, c2008. - viii, 255 p. : ill. ;
Rev. ed. of: Poincaré́́ half-plane. Boston : Jones and Bartlett Publishers, c1993.
9780763753818 0763753815
Geometry, Non-Euclidean.
514.13 / STA