09/23/2007
| Agricultural Industries. | |
| Mineral
Industries. Metal Trades. includes the Organization of Petroleum Exporting Countries |
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| Mechanical Industries. | |
| Miscellaneous Industries and Trades. | |
|
Special Industries and Trades. | ||||||||||
09/23/2007 |
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| SKC Films Library--Social Sciences.--Industries. Land Use. Labor. | |||||||||||