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ลำดับที่LC คำอธิบาย
141 Electric heating
142 Telecommunication Including telegraphy, telephone, radio, radar, television
143 Electronics
144 Computer engineering. Computer hardware
145 Photoelectronic devices (General)
146 Nuclear engineering. Atomic power
147 Electricity for amateurs. Amateur constructors' manuals
148 Motor vehicles. Aeronautics. Astronautics
149 Motor vehicles. Cycles
150 Aeronautics. Aeronautical engineering
151 Rocket propulsion. Rockets
152 Astronautics. Space travel
153 Mining engineering. Metallurgy
154 Mineral deposits. Metallic ore deposits. Prospecting
155 Practical mining operations. Safety measures
156 Mine transportation, haulage and hoisting. Mining machinery
157 Ore deposits and mining of particular metals
158 Metallurgy
159 Nonmetallic minerals
160 Building and ornamental stones
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