Laboratories. General works 28 TJ Mechanical engineering and machinery 13 Malaysia 7 Study and teaching 6 Bacteria 5 Laboratory manuals. Testing of soils. Measurements 5 Educational research. Regional educational laboratories 4 Extraction (Chemistry) 4 Higher Education 4 QD Chemistry 4 Growth 3 Public health. Hygiene. Preventive Medicine 3 Acids and bases 2 Botanical chemistry. Phytochemicals 2 Chemical elements 2 Clinical pathology. Laboratory technique 2 Ecology 2 Educational evaluation 2 Flexure 2 Fungal antigens 2 Growth. Development. Including pattern formation 2 Influence of special factors in the environment 2 Inorganic chemistry 2 Machine design and drawing 2 Microbial ecology 2 Palm oil 2 Physical and theoretical chemistry 2 Physical plant physiology 2 Portland cement 2 Processes, operations, and techniques 2