TY  - BOOK
TI  - 101 must know challenging maths word problems: bk.4 / 
SN  - 9789814453257  
U1  - TR 372.7 C241 2013 
PY  - 2013///
CY  - SG
PB  - Singapore Asia Publishers, Pte, Ltd
KW  - Math--Problem solving & exercises
ER  -