Warning: count(): Parameter must be an array or an object that implements Countable in /home/customer/www/r2test4.com/public_html/wp-content/plugins/ecms/public/ecms-reference-content.php on line 47

Warning: Use of undefined constant has_post_thumbnail - assumed 'has_post_thumbnail' (this will throw an Error in a future version of PHP) in /home/customer/www/r2test4.com/public_html/wp-content/plugins/ecms/public/ecms-reference-content.php on line 53

Warning: count(): Parameter must be an array or an object that implements Countable in /home/customer/www/r2test4.com/public_html/wp-content/plugins/ecms/public/ecms-reference-content.php on line 61

Astronomical & Astrophysical Instruments

Reference Information

  • Created By Wm. Gaertner & Co
  • Title Astronomical & Astrophysical Instruments
  • Source/Publisher Chicago, Illinois, 1908
  • URL http://www.sil.si.edu/DigitalCollections/Trade-Literature/Scientific-Instruments/CF/SIsingle-record.cfm?AuthorizedCompany=The%20Gaertner%20Scientific%20Corporation

Citation Information

  • Website Name Immigrant Entreprenuership
  • URL
  • Access Date December 5, 2022
  • Publisher German Historical Institute
  • Original Published Date
  • Date of Last Update August 9, 2018