| BBW | | Retail-Hobby, Toy & Game Shops | 1113809 |
| BBWI | | Retail-Retail Stores, NEC | 701985 |
| BBXIB | | Retail-Food Stores | 1814974 |
| BBY | | Retail-Radio, Tv & Consumer Electronics Stores | 764478 |
| BC | | Engines & Turbines | 14930 |
| BCAB | | Biological Products, (No Diagnostic Substances) | 1826892 |
| BCAL | | National Commercial Banks | 1795815 |
| BCAR | | Blank Checks | 2065779 |
| BCAT | | - | 1809541 |
| BCAX | | Pharmaceutical Preparations | 2023658 |
| BCBP | | Savings Institution, Federally Chartered | 1228454 |
| BCC | | Wholesale-Lumber & Other Construction Materials | 1328581 |
| BCDA | | Biological Products, (No Diagnostic Substances) | 925741 |
| BCE | | Telephone Communications (No Radiotelephone) | 718940 |
| BCG | | Finance Services | 1953984 |
| BCH | | Commercial Banks, NEC | 1161125 |
| BCHG | | Commodity Contracts Brokers & Dealers | 1732409 |
| BCHT | | Measuring & Controlling Devices, NEC | 728385 |
| BCIC | | - | 1372807 |
| BCKIF | | - | 1516323 |
| BCLI | | Biological Products, (No Diagnostic Substances) | 1137883 |
| BCML | | State Commercial Banks | 1730984 |
| BCO | | Arrangement of Transportation of Freight & Cargo | 78890 |
| BCOW | | Savings Institutions, Not Federally Chartered | 1847360 |
| BCPC | | Chemicals & Allied Products | 9326 |
| BCRD | | Services-Business Services, NEC | 1496690 |
| BCRX | | Biological Products, (No Diagnostic Substances) | 882796 |
| BCS | | Commercial Banks, NEC | 312069 |
| BCSF | | - | 1655050 |
| BCSS | | Blank Checks | 2064355 |
| BCTF | | Savings Institution, Federally Chartered | 1668340 |
| BCTX | | Pharmaceutical Preparations | 1610820 |
| BCUCF | | - | 1581285 |
| BCV | | 0000 | 9521 |
| BCX | | - | 1506289 |
| BCYC | | Pharmaceutical Preparations | 1761612 |
| BDC | | Drawing & Insulating of Nonferrous Wire | 913142 |
| BDCC | | General Bldg Contractors - Residential Bldgs | 1495648 |
| BDCI | | Blank Checks | 2042292 |
| BDCO | | Crude Petroleum & Natural Gas | 793306 |
| BDCTF | | - | 1576159 |
| BDJ | | - | 1332283 |
| BDL | | Retail-Eating Places | 12040 |
| BDMD | | Surgical & Medical Instruments & Apparatus | 1982444 |
| BDN | | Real Estate Investment Trusts | 790816 |
| BDPT | | Pharmaceutical Preparations | 1575142 |
| BDRX | | Pharmaceutical Preparations | 1643918 |
| BDRY | | Commodity Contracts Brokers & Dealers | 1610940 |
| BDSX | | Services-Medical Laboratories | 1439725 |
| BDTB | | Services-Management Consulting Services | 2041531 |
