TY  - GEN
AU  - RYANS, JAMES L.
AU  - ROPER, DANIEL L.
TI  - PROCESS VACUUM SYSTEM : : DESIGN AND  OPERATION/ 
U1  - 621.55 R93 
PY  - 0000///[198
CY  - NEW YORK ; MEXICO: 
PB  - MCGRAW-HILL
KW  - 1.VACIO - TECNOLOGIA
N1  - INCLUYE BIBLIOGRAFIAS E INDICE
ER  -