TY - BOOK ID - 138491393 TI - Guide to communications processing equipment PY - 1975 SN - 0877692130 PB - Philadelphia (Pa.): Auerbach DB - UniCat KW - Telecommunication KW - Telecommunication KW - Equipment and supplies KW - Catalogs KW - Directories UR - https://www.unicat.be/uniCat?func=search&query=sysid:138491393 AB - ER -