TY  - BOOK
AU  - Frischauf,Johannes
TI  - Elemente der Absoluten Geometrie
AV  - QA 
PY  - 2009///
PB  - Project Gutenberg
KW  - Geometry, Non-Euclidean
N1  - Public domain in the USA; Electronic text
UR  - http://www.gutenberg.org/ebooks/29806
ER  -