Classification
TCLF - Radio, video, telephone
9
AQPT - Bibliographies and databases on special subjects
6
TCL - High frequency engineering
6
AHNF - Communication design
2
DYK - Image processing
1
GRA - Meteorology
1
LOL - Genetics - general aspects, classic genetics
1
LONI - Genes, chromosomes
1
MLH - Integral transforms
1
PAM - Physics - miscellaneous topics
1
PEC - Electromagnetic waves
1
TBC - Electronic circuits
1
TCD - Communication systems
1
TCDM - Mobile communication systems
1
TCJ - Signal processing
1
TCLK - Electric filters and amplifiers, antennas
1
TEK - Electric experiments, reliability and technology
1
UXA - Environmental radioactivity
1
UXL - Radiation protection - general aspects
1
YRC - Technology and society
1