The Periodic JOURNAL

 

July 2019 Newsletter

 

May 2019 Newsletter

 

April 2019 Newsletter

 

March 2019 Newsletter

 

February 2019 Newsletter

 

January 2019 Newsletter

 

December 2018 Newsletter

 

October 2018 Newsletter

 

September 2018 Newsletter

 

August 2018 Newsletter

 

July 2018 Newsletter

 
 

June 2018 Newsletter

August 2017 Newsletter

 

June 2017 Newsletter

 

October 2016 Newsletter