000 00441nam a2200109Ia 4500
100 _aIndian Standards Institution
942 _cBK
245 _aIndian standard guide for the use of quartz crystal units for frequency control and selection
_bpiezoelectric devices for frequency control and selection sectional committee, LTDC 12
260 _aIndian Standards Institution, New Delhi
_c1981
082 _aIS:2935-1980 548.85 I.S.I.
300 _a40
999 _c15187
_d15187