TY - BOOK ID - 76077811 TI - Relativiteit : speciale en algemene theorie AU - Einstein, Albert AU - den Boer, W. PY - 1988 SN - 9027462836 PB - Utrecht Spectrum DB - UniCat KW - #gsdbf KW - Theory of relativity. Unified field theory UR - https://www.unicat.be/uniCat?func=search&query=sysid:76077811 AB - ER -