Jahn, Lora Dolores, 1882-1953.
Mathematics in action : book two / Walter W. Hart, Lora D. Jahn. - Boston : D. C. Heath and Company, c.1939. - 54 σ. ; 22 εκ.
Μαθηματικά.
510
Mathematics in action : book two / Walter W. Hart, Lora D. Jahn. - Boston : D. C. Heath and Company, c.1939. - 54 σ. ; 22 εκ.
Μαθηματικά.
510
