TY  - BOOK
AU  - Johnson Norman L
AU  -  Kotz Sameul
TI  - Urn models and their application :  An approach to modern discrete probability theory   
T2  - Wiley Series in Probability and Mathematical Statistics
SN  - 0471446300
U1  - B281, L7 
PY  - 1977///
CY  - NY
PB  - John Wiley         
N1  - Bibliography P 382-86
ER  -