L Education (General) TP Chemical technology TK Electrical engineering. Electronics Nuclear engineering Malaysia LB Theory and practice of education QD Chemistry TH Building construction human H Social Sciences (General) TA Engineering (General). Civil engineering (General) BP Islam. Bahaism. Theosophy, etc Humans QC Physics Article LB1603 Secondary Education. High schools NA Architecture QH301 Biology T Technology (General) TJ Mechanical engineering and machinery adult female male G Geography (General) LB2300 Higher Education Morphological properties Q Science (General) QA75 Electronic computers. Computer science 4-Methylcatechol Adolescent BEHAVIOR