TY - BOOK ID - 32651496 TI - Charles Babbage and his calculating engines PY - 1998 SN - 0901805459 PB - London Science museum DB - UniCat KW - Calculators KW - Machines à calculer KW - History KW - Histoire KW - Babbage, Charles, UR - https://www.unicat.be/uniCat?func=search&query=sysid:32651496 AB - ER -