0- Agriculture, Forestry and Fisheries. 139 Courses Courses of this Class 1A - Mining 116 Courses Courses of this Class 1B - Construction 116 Courses Courses of this Class 2 -Manufacturing 1,213 Courses Courses of this Class 3- Manufacturing II 1363 Courses Courses of this Class 4- Transportation and Public Class 151 Courses Courses of this Class 5A-Wholesale Trade 487 Courses Courses of this Class 5B-Retail Trade 271 Courses Courses of this Class 6- Finances, Insurance, Real Estate 127 Courses Courses of this Class 7- Business Services 385 Courses Courses of this Class 8-Care Services 215 Courses Courses of this Class 9-Public Administration 63 Courses Courses of this Class