WELCHONS, A. M.
Solid geometry. By A. M. Welchons & W. R. Krickenberger. NM: additions.
WELCHONS, A. M. Solid geometry. By A. M. Welchons & W. R. Krickenberger. NM: additions. © 27Oct36; A101132. W. R. Krickenberger (A); 14May64; R337882.
W. R. Krickenberger|A