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1Author:  Roberts, Joseph,1793-1835.Requires cookie*
 Title:  Astronomical calculations,1820-1821     
 Dates:  1820-1821 
 Abstract:  Joseph Roberts was a teacher at Friends Academy. This volume contains various astronomical calculations done by him and his students for 1820-1821.

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 Call #:  Mss.524.M44 
 Extent:  1 volume(s) 
 Topics:  Education | Science and technology 
 Genre:  Educational Material | Scientific Data 
 Subjects:  Astronomy. | Meteorology -- Pennsylvania -- Philadelphia.