Objetos celestes para telescopios modernos

by Covington, Michael A.
Published 2006

Astrofotografía con cámaras réflex digitales

by Covington, Michael A.
Published 2009

Telescopios modernos para aficionados

by Covington, Michael A.
Published 2005

Dictionary of computer terms /

by Downing, Douglas A., Downing, Douglas A., Covington, Michael A.
Published 1986

Dictionary of computer and Internet terms /

by Downing, Douglas A., Downing, Douglas A., Covington, Michael A., Covington, Melody Mauldin
Published 1998

Dictionary of computer and internet terms

by Dowining, Douglas A.
Published 1996