Analysis of information sources in references of the Wikipedia article "ژان پیاژه" in Persian language version.
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: More than one of |کد زبان=
و |زبان=
specified (help){{cite web}}
: More than one of |کد زبان=
و |زبان=
specified (help){{cite web}}
: More than one of |کد زبان=
و |زبان=
specified (help){{cite web}}
: More than one of |کد زبان=
و |زبان=
specified (help)