TY  - BOOK
AU  - Crispin, Alan J.
TI  - Programmable logic controllers and their engineering applications
SN  - 0077093178
PY  - 1997///
CY  - London
PB  -  McGraw-Hill
KW  - Programmable controllers
N1  - "Incorporating IEC 1131-3 standard"--Cover; Includes bibliographical references and index
ER  -