_id	Site	Type	Subject Categories
1	HydroGEN	Technical Report/Workshop Report	01 Coal, Lignite, and Peat
2	HyMARC	Journal Article	02 Petroleum
3	DuraMAT	Dataset	03 Natural Gas
4	ChemCatBio	Conference	04 Oil Shales and Tar Sands
5	ElectroCat	Program Document	07 Isotope and Radiation Sources
6	Battery	S&T Accomplishment Report	08 Hydrogen
7	""	Book/Monograph	09 Biomass Fuelds
8	""	Thesis/Dissertation	10 Synthetic Fuelds
9	""	Factsheet	11 Nuclear Fuel Cycle and Fuel Materials
10	""	Other	12 Management of Radioactive and Non-radioactive wastest from nuclear facilities
11	""	""	13 Hydro Energy
12	""	""	14 Solar Energy
13	""	""	15 Geothermal Energy
14	""	""	16 Tidal and Wave Power
15	""	""	17 Wind Energy
16	""	""	20 Fossil-Fueled Power Plants
17	""	""	22 General Studies of Nuclear Reactors
18	""	""	24 Power Transmission and Distribution
19	""	""	25 Energy Storage
20	""	""	29 Energy Planning, Policy, and Economy
21	""	""	30 direct Energy Conversion
22	""	""	32 Energy Conservation, Consumption, and Utilization
23	""	""	33 Advanced Propulsion Systems
24	""	""	36 Materials Science
25	""	""	37 Inorganic, Organic, Physical, and Analytical Chemistry
26	""	""	38 Radiation Chemistry, Radiochemistry, and Nuclear Chemistry
27	""	""	42 Engineering
28	""	""	43 Particle Accelerators
29	""	""	45 Military Technology, Weaponry, and National Defense
30	""	""	46 Instrumentation Related to Nuclear Science and Technology
31	""	""	47 Other Instrumentation
32	""	""	54 Environmental Sciences
33	""	""	58 Geosciences
34	""	""	59 Basic Biological Sciences
35	""	""	60 Applied Life Sciences
36	""	""	61 Radiation Protection and Dosimetry
37	""	""	62 Radiology and Nuclear Medicine
38	""	""	63 Radiation, Thermal, and Other Environ. Pollutant Effects on living orgs and bio matter
39	""	""	70 Plasma Physics and Fusion Technology
40	""	""	71 Classical and Quantum Mechanism, General Physics
41	""	""	72 Physics of Elementary Particles and Fields
42	""	""	73 Nuclear Physics and Radiation Physics
43	""	""	74 Atomic and Molecular Physics
44	""	""	75 Condensed Matter Physics, Superconductivity, and Superfluidity
45	""	""	77 Nanoscience and Nanotechnology
46	""	""	79 Astronomy and Astrophysics
47	""	""	96 Knowledge Management and Preservation
48	""	""	97 Mathematics and Computing
49	""	""	98 Nuclear Disarmament, Safeguards, and Physical Protection
50	""	""	99 General and Miscellaneous