000			02508cam a22003377 4500
001			w4840
003			NBER
005			20211020114341.0
006			m o d
007			cr cnu||||||||
008			210910s1994 mau fo 000 0 eng d
100	1		_aEllison, Glenn.
245	1	0	_aGeographic Concentration in U.S. Manufacturing Industries: _bA Dartboard Approach / _cGlenn Ellison, Edward L. Glaeser.
260			_aCambridge, Mass. _bNational Bureau of Economic Research _c1994.
300			_a1 online resource: _billustrations (black and white);
490	1		_aNBER working paper series _vno. w4840
500			_aAugust 1994.
520	3		_aThis paper discusses the prevalence of Silicon Valley-style localizations of individual manufacturing industries in the United States. Several models in which firms choose locations by throwing darts at a map are used to test whether the degree of localization is greater than would be expected to arise randomly and to motivate a new index of geographic concentration. The proposed index controls for differences in the size distribution of plants and for differences in the size of the geographic areas for which data is available. As a consequence, comparisons of the degree of geographic concentration across industries can be made with more confidence. We reaffirm previous observations in finding that almost all industries are localized, although the degree of localization appears to be slight in about half of the industries in our sample. We explore the nature of agglomerative forces in describing patterns of concentration, the geographic scope of localization, and the extent to which agglomerations involve plants in similar as opposed to identical industries.
530			_aHardcopy version available to institutional subscribers
538			_aSystem requirements: Adobe [Acrobat] Reader required for PDF files.
538			_aMode of access: World Wide Web.
588	0		_aPrint version record
690		7	_aO40 - General _2Journal of Economic Literature class.
690		7	_aL11 - Production, Pricing, and Market Structure • Size Distribution of Firms _2Journal of Economic Literature class.
700	1		_aGlaeser, Edward L. _911455
710	2		_aNational Bureau of Economic Research.
830		0	_aWorking Paper Series (National Bureau of Economic Research) _vno. w4840.
856	4	0	_uhttps://www.nber.org/papers/w4840
856			_yAcceso en línea al DOI _uhttp://dx.doi.org/10.3386/w4840
942			_2ddc _cW-PAPER
999			_c343552 _d302114