Recreatii stiintifice  125 de la aparitia 1883 - 2008 
Temistocle Birsan, Tiba Dan 
 - Iasi  Editura Recreatii matematice  2008 
 - 67 p  21 cm 
<br/><br/> Contine bibliografie 
<br/><br/><label>ISBN: </label>9789738808874