Add the missing treaty dates

Error²Federal courts, Illinois courts21st and 22nd editions

A treaty citation in a Philippine series states two dates: when the Philippines signed or acceded, and when the treaty entered into force, because the two can fall years apart.¹

1. 1T2.34 Philippines; T2.33 Philippines.
2. 2An error: the rule in note 1 allows one form, and this is not it.