TY  - BOOK
AU  - Samarasinghe,A.Sam,1948-
TI  - Tricky puzzles
SN  - 967600247X
PY  - 1991///
CY  - Petaling Jaya
PB  - Eastview Productions
KW  - Mathematical recreations
KW  - Juvenile literature
N1  - First published 1990 by Pan Pacific Publications
ER  -