TY  - BOOK
AU  - Beth, Thomas
AU  - Jungnickel,Dieter and
AU  - Lenz, Hanfried
TI  - Design theory;vol.I
T2  - Encyclopedia of mathematics and its applications
SN  - 0521444322
U1  - 511.6 
PY  - 1999///
CY  - Cambridge
PB  - Cambridge University Press
ER  -