ISSN: 2457 - 161X
ISSN-L: 2457 - 161X
500 de probleme de geometrie in spatiu
OLM 2018 - BUCURESTI - CLASA A IX-A
Concurs interdisciplinar Dr.Paul Tanco,15.05.2010,cl.a V-a
500 de probleme de geometrie plana
Concurs interdisciplinar Dr.Paul Tanco,15.05.2010,cl.a IV-a
Concurs Gavril Tulai,Nasaud,8.V.2010,cl.a VI-a