000			00345nam a2200145Ia 4500
008			170519s9999 xx 000 0 und d
041			_aEnglish
082			_a530.076/PRO
100			_aL.G GRECHKO
245			_aPROBLEMS IN THEORETICAL PHYSICS
260			_bMIR PUBLISHERS _aMOSCOW _c1977
300			_c447p
650			_aPHYSICS
942			_cBK
999			_c74538 _d74538