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
by Beth, Evert Willem
Published 1968
Springer Netherlands

2
by Beth, Evert Willem
Published 1959
Elsevier Science