Răspunsuri

2014-11-12T17:50:05+02:00
Ok ...GR.I-1 , GR II-2 , GR III-3 , GR IV-4 , GR V-3 , GR VI-2 , GR VII- 1 , GR VIII-0
si tot asa
intelegi?
ok
dar le gasesti in carte in sistemul periodic
nu este valenta