00466nam a2200157Ia 4500001001100000005001700011008004100028050001800069090001300087245006900100260004500169300003000214504003100244650001800275999001500293000002274120251012174645.0  690408s1969    mdua     b    001 0 eng00aHB74.M3bF53200a330.01/810aClustering and aggregation in economicsc[by] Walter D. Fisher.   aBaltimore,bJohns Hopkins Pressc[1969]   axii, 195 pbillusc24 cm.  aBibliography: p. 139-147.  0aEconometrics.  c8176d8176