TY  - BOOK
AU  - Mohd Yusof Hasan, 
TI  - Pemikiran saintifik SPB4L
SN  - 9837412763
U1  - 153.42 23
PY  - 2000///
CY  - Petaling Jaya, Selangor : 
PB  - Pearson Education , 
KW  - Thought and thinking
ER  -