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1. ......................

Author: Edberg, Stephen J.

Library: Central Library and Information Center of Ferdowsi University of Mashhad (Khorasan Razavi)

Subject: Observers'manuals ، Comets,Halley's manuals

2. A Simple Method of Determining Archaeoastronomical Alignments in the Field

Author: Seymour, Timothy P; Edberg, Stephen J,Seymour, Timothy P; Edberg, Stephen J

Library: Center and Library of Islamic Studies in European Languages (Qom)

Subject:

3. ‎International Halley watch amateur observers' manual for scientific comet studies‎

Author: / Stephen J. Edberg

Library: Central Library of Astan Quds Razavi-Hall of Foreign Books (Khorasan Razavi)

Subject: Halley's comet,Comets