TY  - BOOK
AU  - IBM
TI  - IBM system/360 operating system PL/1 (F) language reference manual
T2  - IBM systems reference library
U1  - D65,8(B)91, L21-;1 
PY  - 1972///
CY  - New York    
PB  -  IBM        
KW  - Operating system
ER  -