TY  - BOOK
AU  - Bollobas,Bela
TI  - Extremal graph theory
SN  - 0121117502
U1  - 511/.5 
PY  - 1978///
CY  - London, New York
PB  - Academic Press
KW  - Graph theory
KW  - Extremal problems (Mathematics)
N1  - Includes indexes; Bibliogr.: p. 438-479
ER  -