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Astronomical Optics 2nd ed - D. Schroeder (AP, 2000) WW.pdf

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Steven_R_Coe_Nebulae_and_How_to.pdf

Roger_Dymock_Asteroid_and_how_to.pdf

Robert_Lunsford_Meteors_and_How.pdf

Richard_W_Schmude,_Jr_Uranus,_Neptune.pdf

Peter_Grego_The_Moon_and_How_to.pdf

Martin_Mobberley_The_Caldwell_Objects.pdf

Martin_Mobberley_Cataclysmic_Cosmic.pdf

Mark_Allison_Star_Clusters_and_How.pdf

Jamey_L_Jenkins_The_Sun_and_how.pdf

James_Mullaney_Double_stars_and.pdf

Stacy Palen - Theory and Problems of Astronomy.pdf

Roy_A_,_Clarke_D_Astronomy__Principles.pdf

Kutner_M_L_Astronomy_A_Physical.pdf

Friedmann, Roger A. & Kaufmann, William J. - Universe.pdf

Fix John D. - Astronomy_Journey to the cosmic frontier.pdf

Dinah L. Moche - Astronomy_A self-teaching guide.pdf