TY  - BOOK
AU  - Prisher, Roy A  .
AU  - Rhea,Robert A  .
TI  - Pipe Drafting and Design : Instructor`s guide / 
U1  - 621.8672 
PY  - 1996///
CY  - Houston : 
PB  - Gulf publishing Company , 
N1  - 20354 Reference
ER  -