Informative bulletines "BOOKS" 2018
N 1/2	N 20/21	N 37
N 3/4	N 22/23	N 38/39
N 5/6	N 24/25	N 40
N 7/8	N 26	N 41
N 9/10	N 27/28	N 42/43
N 11/12	N 29/30	N 44/45
N 13/14	N 31/32	N 46
N 15	N 33	N 47/48
N 16/17	N 34/35	N 49/50
N 18/19	N 36	N 51/52