TY  - BOOK
AU  - Indian Standards Institution
TI  - Indian standard letter symbols for semiconductor devices part IV thyristors: semiconductor devices and integrated circuits sectional committee, ETDC 40
U1  - IS:3715(pt.IV)-1971 621.38152 I.S.I. 
PY  - 1972///
CY  - Indian Standards Institution, New Delhi
ER  -