000 00277nam a2200109Ia 4500
008 190719s9999 xx 000 0 und d
100 _aVijayender Pal Singh
245 0 _aRajvigyaan ke siddhaant
260 _aDelhi
_bVibhuti Prakashan
_c1977
650 _aPol Science
942 _cBK
999 _c3574
_d3574