TY  - BOOK
AU  - Stevenson,Frederick W.
TI  - Projective planes
T2  - A series of books in mathematics
SN  - 0716704439
U1  - 516/.5 
PY  - 1972///
CY  - San Francisco
PB  - Freeman
KW  - Projektive Ebene
UR  - http://www.gbv.de/dms/hbz/toc/ht000832226.pdf
UR  - http://digitale-objekte.hbz-nrw.de/webclient/DeliveryManager?pid=2008008&custom_att_2=simple_viewer
ER  -