000 00331nam a2200157Ia 4500
082 _a338.521
_bT963.DS
100 _aTurvey, Ralph
245 _aDemand and supply
_b
260 _aLondon
_bGeorge Allen & Unwin Ltd
_c1971
300 _a127p.
500 _a
690 _a
700 _a
964 _a
_b
_c
_d
_e
_f
_g
921 _a5252
999 _c5252
_d5252