Hōrei yōgo Nichi-Ei hyōjun taiyaku jisho   http://www.cas.go.jp/jp/seisaku/hourei/dictionary.pdf
法令用語日英標準対訳辞書
This dictionary created by a committee of the Japanese government is the new official government standard for translation of Japanese laws into English. (2006)

Kokumin hōritsu hyakka daijiten
国民法律百科大辞典 8 vols.
EA Ref: KNX26 .K658 1984 

Gyōsei hyakka daijiten
行政百科大辞典 6 vols.
EA Ref: JQ1605 .G9 1976

Chihō jichi hyakka daijiten
地方自治百科大辞典
E.A. Ref. JS7372.A2 C45 1987
Examines regional economics, society and politics. Includes local places until Showa 62, though the changes instituted thereafter are included as much as possible. Arranged in gojuon order. Laws are quoted verbatim. Has an index of legal abbreviations.

Shin hōritsugaku jiten
新法律学辞典
EA Ref: K50 .S554 1989

Yūhikaku Hōritsu Yōgo Jiten
有斐閣法律用語辞典
EA Ref: KNX26 .Y85 1993 

English-Japanese Legal Dictionary and Handbook
Law Reference: K52 .J36 1995