Evert Willem Beth

Evert Willem Beth (7 July 1908 – 12 April 1964) was a Dutch philosopher and logician, whose work principally concerned the foundations of mathematics. He was a member of the Significs Group. Provided by Wikipedia
1
A study in the philosophy of science [E-Book] /
Other Personal Name(s): ...Beth, Evert Willem....

Full text 
2
The foundations of mathematics : a study in the philosophy of science /
Book
Other Personal Name(s): ...Beth, Evert Willem....