Classificazione LCTH6131

architecture(50) art(6) careers(6) construction(63) culture(8) design(17) diy(109) engineering(16) guide(6) health(5) history(83) household(12) how-to(96) humor(13) jobs(5) photography(5) public health(6) reference(97) repair(37) sanitation(15) science(8) self-help(11) social history(5) sociology(5) tools(5) trades(6) travel(11)