TY  - BOOK
AU  - Sury B
TI  - Congruence subgroup problem: an elementary approach at applications
T2  - Texts and readings in mathematics 24
SN  - 8185931380
U1  - 512.72 
PY  - 2003///
CY  - New Delhi
PB  - Hindustan Book Aegncy
KW  - Congruence subgroup elementary
N1  - includes bibliographical references and index
ER  -