000 00275pam a2200109a 44500
040 _aP K Kelkar Library, IIT Kanpur
100 _aFock, V.
245 0 _aThe theory of space time and gravitation
_cV. Fock
260 _a
_b
_c1959
300 _a411p
997 _a3083 C
999 _c450491
_d450491