TY - BOOK ID - 961913 TI - Black holes, wormholes and time machines PY - 1999 SN - 0750305606 0585267952 PB - Bristol Institute of Physics DB - UniCat KW - Theory of relativity. Unified field theory KW - Space and time. UR - https://www.unicat.be/uniCat?func=search&query=sysid:961913 AB - ER -