AAVSO: American Association of Variable Star Observers

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only in this directory Organizations Amateur Clubs@ (66) Clubs (91) Mars Society@ (16) Meteor@ (5) Planetarium Associations@ (4) Professional (2) Sciastro.net Youth (2)	AAVSO: American Association of Variable Star Observers The American Association of Variable Star Observers: Professional and Amateur collection, research, and analyzation of variable star observations.