User:Sisimiut
My name is Berndt Schwerdtfeger, I created this account in February 2012. My interests are Mathematics and Astronomy. More info on my website http://berndt-schwerdtfeger.de
My name is Berndt Schwerdtfeger, I created this account in February 2012. My interests are Mathematics and Astronomy. More info on my website http://berndt-schwerdtfeger.de