aesthetics an22 career computerscience csf0 cu00 cu03 cu07 cuz0 ec80 en20 enz0 general globalization hi40 hi43 hi73 history intelligence(ai) modern philosophy pl00 pl01 pl02 pl10 pl13 pl25 pl44 pl50 pl70 pll0 plm0 pln0 plz0 po11 po17 po20 po21 po30 po31 po34 po51 po52 political politicalscience politics poz0 professional ps79 re14 re26 religion semantics so10 so12 so21 socialsciences sociology state surveys trade