TY  - BOOK
AU  - Chuaqui R B
TI  - Axiomatic set theory
T2  - North-Holland mathematics studies; 51
U1  - B217, M1 
PY  - 1981///
CY  - Amsterdam
PB  - North-Holland         
KW  -  Combination
KW  - Permutation
N1  - Bibliography 377-380p
ER  -