Innovation and the Growth of Cities
Zoltán J. Ács
Extract
Biotechnology and biomedical Medicinals and botanicals (283) Medical instruments and supplies (384) Ophthalmic goods (385) Information technology and services Computer and office equipment (357) Electronic distribution equipment (361) Audio and video equipment (365) Communications equipment (366) Electronic components and accessories (367) Communication services (489) Computer and data processing services (737) Defense and aerospace Ordnance and accessories (348) Aircraft and parts (372) Guided missiles and space (376) Search and navigation equipment (381) Energy and chemicals Crude petroleum and natural gas (131) Industrial inorganic chemicals (281) Plastic materials and synthetics (282) Industrial organic chemicals (286) Miscellaneous chemical products (289) Petroleum refining (291) High-technology machinery and High-technology research instruments Engines and turbines (351) Research, development and testing Construction and related machinery services (873) (353) General industrial machinery (356) Electrical industrial apparatus (362) Household appliances (363) Electric lighting and wiring (364) Miscellaneous electrical equipment and suppliers (369) Measuring and controlling devices (382) Photographic equipment and supplies (386) Source: Office of Management and Budget, Standard Industrial Classification Manual, 1987, Washington DC, 1988. 214
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