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Timeline for all types of items produced by
Gakken [Japan]

YearItems
19792
19805
19816
198216
198327
19871
19901
19952
19961
20011
20021
20031
20061

65 items with a valid date were considered for this timeline (69.89% of the total)
28 items with an invalid date.

Help us in our quest to find exact dates for:

198?: 18 items.
199?: 5 items.
19??: 4 items.
201?: 1 item.