000 00413nam a2200169Ia 4500
008 131223s9999 xx 000 0 und d
040 _aISI KOLKATA
041 _aEnglish
082 _a302.33
_bP417
100 _aPenrose L S
245 _aOn the objective study of crowd behaviour
260 _aLondon
_bH K Lewis
_c1952
300 _a74p.
650 _aCrowds
650 _aSocial interaction
942 _cBK
999 _c30053
_d30053