NEEDLE-TYPE MAGNETIC PARTICLES OF MAGNETIC RECORD CARRIER
KOSTOVA NELLI Z,SU, IVANCHENKO RAISA I,SU, MORGAL ANNA D,SU, DYACHENKO VERA S,SU, KHRYAPINA LYUDMILA YU,SU
Year of Publication 23.03.1986
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Year of Publication 23.03.1986
Patent