TY  - BOOK
AU  - Barakzai, Mohammad Zahir
TI  - Simple chemistry [Pashtu] / Mohammad Zahir Barakzai
U1  - QD 
CY  - Peshawar : Khawar Publications, 2005 (1384).
KW  - Chemistry - Programmed instruction
KW  - Chemistry
KW  - EDU
ER  -