Books like Philippine Law Dictionary
Federico B. Moreno
Philippine Law Dictionary is 667 pages, about 12 hours 14 minutes at 250 words a minute.
9 books to read next
How long each takes
Black's Law Dictionary 31.9 h 
Law Dictionary 29.0 h Kamus Hukum 12.0 h Fjalor I Terminologjise Juridike 7.1 h 
The Interpreter's Companion 6.5 h 
Black's Law Dictionary 30.4 h 
Ballentine's Law Dictionary, with Pronunciations 26.2 h 
Halsbury's Laws of England 15.5 h 
Diccionario de Derecho 9.4 h Bar height shows length. Estimated at 250 words a minute.