The N-13 + C-12,C-13 elastic scatterings have been measured at laborat
ory energies of 16.3, 20. and 29.5 MeV. It is shown that the N-13 + C-
12 and C-13 + C-12 systems seem to comply with charge symmetry. A prel
iminary analysis of the N-13 + C-13 system reveals very interesting da
ta which cannot be reproduced easily. First investigations are present
ed.