TY - BOOK ID - 132404062 TI - Reports on telephone engineering 2/3-69 PY - 1969 PB - Muenchen Siemens DB - UniCat KW - Telecommunication technology KW - berichtendienst KW - telecommunicatie KW - telefonie KW - bedrijfswetenschappen UR - https://www.unicat.be/uniCat?func=search&query=sysid:132404062 AB - ER -