TY - BOOK AU - Landau, Lev Davidovich AU - Rumer, I︠U︡. B. (I︠U︡riĭ Borisovich) TI - What is relativity? PB - Dover Publications PY - 2003 EP - vi, 72 p. UR - https://ci.nii.ac.jp/ncid/BA62767775 SN - 0486428060 ER -