TY - BOOK ID - 127902154 TI - Perpetual motion AU - Gibson, Graeme AU - Cook, Ramsay PY - 1997 SN - 0771034628 PB - Toronto : McClelland and Stewart, DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:127902154 AB - ER -