Paul Lorenzen -- mathematician and logician 
Heinzmann, Gerhard & Wolters, Gereon. 
 -  Springer Nature,  2021 
 - 274 pages. 
<br/><br/>
<br/><br/><label>ISBN: </label>978-3-03-065823-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Constructivism (Philosophy).
<br/><br/><label>Dewey Class. No.: </label>510.1 P2811 2021