| 000 | 00321cam a22001217a 4500 | ||
|---|---|---|---|
| 008 | 180718b1952 xxu||||| |||| 00| 0 eng d | ||
| 082 | _aF1 P387 | ||
| 100 | _aPenrose, L.S. | ||
| 245 |
_aOn the objective study of crowd behavior _cby L.S. Penrose |
||
| 260 |
_aLondon _bH.K. Lewis _c1952 |
||
| 300 | _a73p | ||
| 650 | _aCrowds | ||
| 999 |
_c425979 _d425979 |
||