Classification
TKH - Air flight, space flight
275
ETF - Fuel cells - general
8
FMTG - High temperature alloys
5
TNA - Nuclear engineering - general
5
ETC - Energy conversion
4
PLA - Astrosciences - general
4
TIJ - Furnaces, combustion plants
4
FNT - Powder technology
3
FNV - Composite materials, fiber materials
3
TGE - Measuring instruments
3
TKJ - Traffic
3
FNM - High temperature materials, high temperature properties
2
TGN - Control engineering
2
THQ - Fluid mechanics and dynamics
2
TIA - Industrial engineering - general
2
TIG - Reliability, safety, quality control
2
CH - Physical chemistry
1
CLE - Combustion, flames, explosions
1
CNWK - Electric batteries
1
CWE - Chemical engineering, chemical industry - general
1
FGEC - Microgravity processing
1
FMA - Metals, alloys - general (reports)
1
FMT - Refractory metals, refractory alloys
1
FNPD - Hard materials, refractory compounds
1
FPH - Fatigue, mechanical testing
1
FPTL - High temperature corrosion
1
HBA - Medical physics
1
HDG - Psychology, psychiatry
1
HEE - Human physiology - general aspects
1
MWA - Probability theory - general
1
MWF - Programming, optimization, control theory
1
PAD - Physics - comprehensive works
1
TBA - Electronic engineering - general
1
TCA - Communication science - general
1
TCL - High frequency engineering
1
TGB - Metrology
1
TGNE - Control engineering - applications
1
THA - Mechanical engineering - general
1
THD - Design and construction in mechanical engineering
1
THQD - Gas flow
1
TIK - Filter, dust
1
TKD - Air conditioning, refrigeration
1
TNJ - Nuclear reactor technology
1
TNL - Nuclear fuel, nuclear fuel elements - general
1
TNOB - Nuclear reactor accidents
1
TNX - Nuclear propulsion, nuclear explosions
1
UA - Environment - general
1
UCS - Environmental chemistry
1
UMB - Atmospheric chemistry
1
UMC - Atmospheric physics
1
more ...