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77 Nuclear sciences and technology
79 Ordinance
81 Propulsions and propellants
82 Photography and recording devices
84 Space technology
85 Transportation
88 Library and information sciences
89 Building industry technology
90 Government invention for licensing
91 Urban and regional technology and development
92 Behavior and society
93 NASA landsat program
94 Industrial and mechanical engineering
95 Biomedical technology and human factor engineering
96 Business and economics
97 Energy
98 Agriculture and food
99 Chemistry
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2. Pembagian kelas utama
Didalam klasifikasi NTIS pembagian sub-sub kelas dari kelas utama berbeda dari sistem klasifikasi DDC, dalam sistem klasifikasi NTIS sub-sub
kelas ditambahkan dengan notasi huruf kapital dari bagan kelas utama. Berikut ini contoh pembagian sub-sub kelas dari nomor kelas utama 98 yaitu
Agriculture Food:
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Ernalia Subagio, Skema Klasifikasi National Technical Information Services: NTIS Subject Catergory Descriptions Jakarta: Badan Pengkajian dan Penerapan Teknologi, 2002 , h.1.
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Agricultural Chemistry 98A
The application of chemistry and chemical analysis to agriculture; fertilizer production; soil chemistry; chemistry of feeding stuffs; crop chemistry;
biochemical studies. For food chemistry, use 98H.
Agricultural Economics 98B
Economics conditions,markets subsidies, and policies affecting agriculture; farm management and finance; land and labor economics; prices and price
control. See also 96C.
Agricultural Equipment, Facilities, Operations 98C
Agricultural engineering;
agricultural machinery
and tools;
seed preservation; planting, fertilizing,mulching,weeding, and harvesting; pest and
disease control tecniques and equipment; crop protection; crop drying and storage; farm construction and operation. For pest control, see also 57P. For
food processing, use 98H.
Agronomy, Horticulture, Plant Pathology 98D
Field Crop production; cultivation of orchads, gardens and nurseries; plant biology; plant breeding, propagation, and hybridizing; hydroponics. See also
57C.
Animal Husbandry Veterinary Medicine 98E
Production and care of domestic and wild animals; breeding, feeding, management, rearing, testing, and training; pets; animal pathology; toxic
effect on domestic animals; animal quarantine; disease resistance, control and treatment; breeding, care, utilization of laboratory animals. See also 57Z.
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Fisheries Aquaculture 98F
Fishing, fishing equipment, and shipboard processing of fisheries products; cultivation of fishes, shellfish, and algae in fresh or salt water for commercial
or recreational use; use of fish ladders and weirs; sport fishing. See also 47D, 48B, and 57Z. For fish processing, use 98H.
Agriculture Resource surveys 98G
Surveys to scan crop yield, soil moisture content, crop disease, and forest diseases. Includes fishery surveys; satellite and aerial surveys.
Food technology 98H
Pasteurizing, Curing, canning, dehydrating, freezing, irradiation, freeze dryin, ect., of foods and other agricultural products; sanitation and fumigation of
product; food additives and preservatives; analysis and inspection of products; storage, packaging, and display of products; kitchen and cooking
equipment. For biochemical studies of food, see also 57B.
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3. Cara penggunaan NTIS
