The Planetarium
Subtitle: history, construction, operation : the Fels Planetarium of the Franklin Institute, Philadelphia, Pennsylvania
By: by Roy K. Marshall
Publisher: Sky Publishing Corporation; Harvard College Observatory
Published: 1943
Place of publication: Cambridge, Mass
Language: eng
Number of pages: 18
Subjects: Planetariums; Instruments
Other titles: Fels Planetarium of the Franklin Institute
Notes: Title from cover.