aa12 collegesuccess cu00 cu02 ed63 english enz0 fantasy fiction general history literarycriticism lt10 lt13 lt70 philosophy pl01 pl10 pl13 pl20 pl25 pl40 pl44 pl60 pl90 plh0 plj0 pln1 plp0 plz0 po50 re10 science sciencefiction so10 socialaspects socialsciences surveys