Extraction (Chemistry) 20 Laboratories. General works 15 QD Chemistry 10 Statistical data 10 Organic chemistry 7 Study and teaching 7 Food processing and manufacture 6 Bacteria 5 Growth. Development. Including pattern formation 5 Malaysia 5 Statistical methods 5 Textile bleaching, dyeing, printing, etc 5 Microbial ecology 4 Negeri Sembilan 4 Oxidation 4 Physical plant physiology 4 Plant physiology 4 Surveys. Sampling. Statistical survey methodology 4 Analysis 3 Botanical chemistry. Phytochemicals 3 Business cycles. Economic fluctuations. Economic indicators 3 Dyes 3 Ecology 3 Fishes 3 Fungal antigens 3 Inorganic chemistry 3 Interpersonal relations. Social behavior 3 Investment, capital formation, speculation 3 Mathematical statistics. Probabilities 3 Palm oil 3