6 .... ... V oc ational ▁re h abil itation . ▁Emp loyment ▁of ▁people ▁with ▁dis abilities ▁ 7 2 6 0 - 7 7 8 0 . 8 ..... Ind ust rial ▁h yg iene . ▁Indust rial ▁w elf are ▁ 7 7 9 5 - 8 0 2 7 .... ... L abor ▁policy . ▁Labor ▁and ▁the ▁state ▁ 8 0 3 1 ........ .... L abor ▁in ▁politics . ▁Political ▁activity ▁of ▁the ▁working ▁class ▁ 8 0 3 8 ........ .... Pro f essions ▁( General ). ▁Professional ▁employees ▁ 8 0 3 9 ........ .... By ▁industry ▁or ▁trade ▁ 8 0 4 5 - 8 9 4 3 .... ... By ▁region ▁or ▁country ▁ 9 0 0 0 - 9 9 9 9 ........ Special ▁indust ries ▁and ▁tr ades ▁ 9 0 0 0 - 9 4 9 5 .... ... A gr icult ural ▁indust ries ▁ 9 5 0 2 - 9 5 0 2 . 5 ..... E ner gy ▁indust ries . ▁Energy ▁policy . ▁F uel ▁trade ▁ 9 5 0 6 - 9 6 2 4 .... ... M iner al ▁indust ries . ▁Metal ▁trade ▁ 9 6 5 0 - 9 6 6 3 .... ... Ch em ical ▁indust ries ▁ 9 6 6 5 - 9 6 7 5 .... ... Ph arma ce ut ical ▁industry ▁ 9 6 8 0 - 9 7 1 4 .... ... Me chan ical