LEADER 01267nam a2200373 i 4500
001 991001207619707536
005 20020507185236.0
008 950218s1980    de            ||| | eng  
020   $a3540097295
035   $ab10815648-39ule_inst
035   $aLE01308699$9ExL
040   $aDip.to Matematica$beng
082 0 $a380.50724
084   $aAMS 90A15
084   $aHE193
100 1 $aErlander, Sven$0536336
245 10$aOptimal spatial interaction and the gravity model /$cSven Erlander
260   $aBerlin ; New York :$bSpringer-Verlag,$c1980
300   $a107 p. ;$c25 cm.
490 0 $aLecture notes in economics and mathematical systems,$x0075-8442 ;$v173
500   $aBibliography: p. [97]-102.
500   $aIncludes index
650  4$aEconomic biology
650  4$aEconomic models
650  4$aOptimization
650  4$aPlanning
650  4$aTrade models
650  4$aTransportation
907   $a.b10815648$b23-02-17$c28-06-02
912   $a991001207619707536
945   $aLE013 90A ERL11 (1980)$g1$i2013000021645$lle013$o-$pE0.00$q-$rl$s-  $t0$u0$v0$w0$x0$y.i1092226x$z28-06-02
996   $aOptimal spatial interaction and the gravity model$9925214
997   $aUNISALENTO
998   $ale013$b01-01-95$cm$da  $e-$feng$gde $h0$i1