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IAU COMMISSION NO. 9: INSTRUMENTS [13]
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[Corresp: Helmut Scheffler; DHSadler; Gerald E. Kron; JSHall; JFDenisse; OAMelnikov; JDMcGee]
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[Corresp: OAMelnikov; JRösch; JDMcGee; GEKron; DHSadler; OCMohler; NUMayall; OHeckmann; BLindblad; MJSmyth; Gordon Newkirk, Jr.; GWlérick; AHoffmann]
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[Corresp: DHSadler; J-CPecker; Harry Seddon; GEKron; JDMcGee; GWlérick; JRösch]
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