000 00278nam a2200133Ia 4500
008 220613s9999||||xx |||||||||||||| ||und||
100 _aDuggal,S.K.
245 0 _aSurveyig
250 _a4th,(2014)
260 _bNew Delhi: MGH
300 _a625
650 _aCE
942 _cENG
999 _c13026
_d13026