TY  - BOOK
AU  - Syed Hassan Hussain & Salman Sadruddin
TI  - Acedemic Push Notification Service (APNS) (code book)
U1  - 005.1072 SYE 
PY  - 2011///
CY  - Karachi
PB  - UIT
KW  - Computer Science
KW  - Bachelor of Computer Science (BS)
ER  -