01-10-2017, 04:11 PM
As the title says, equivalence was a subject matter in the 1920s already, but I reckon they were talking about the true spirit of equivalence, the stuff that really counts if you'd ask me ....
http://www.jnevins.com/whitereading.htm
Kind regards, Wim
http://www.jnevins.com/whitereading.htm
Kind regards, Wim