BERLE, ALF K.
Inventions and their management. By Alf K. Berle & L. Sprague de Camp.
BERLE, ALF K. Inventions and their management. By Alf K. Berle & L. Sprague de Camp. © 14Jul37; A111013. L. Sprague de Camp (A) & Elizabeth W. Berle (W); 21Oct64; R347009.
L. Sprague de Camp|A||Elizabeth W. Berle|W