Timeline for all types of items produced by
GTS Editorial, S.A. [Madrid, Spain]

Year	Items
1984	1
1985	11
1986	22
1987	11

45 items with a valid date were considered for this timeline (77.59% of the total)
13 items with an invalid date.

Help us in our quest to find exact dates for:

198?: 11 items.
19??: 2 items.