8 best mystery reference

Polish for Beginners: A Comprehensive Guide for Learning the Polish Language Fast

Polish: Learn Polish for Beginners: A Simple Guide That Will Help You on Your Language Learning Journey

Barron's Spanish-English Pocket Dictionary: 70,000 words, phrases & examples presented in two sections: American style English to Spanish -- Spanish to English

Barrons Educational Series

English U.S.A. Every Day

Barrons Educational Series

Riddle of the Prairie Bride: American Girl History Mysteries

Betrayal at Cross Creek: American Girl History Mysteries

The Cereal Box Mystery: The Boxcar Children Mysteries, Book 65

The Mystery of the Stolen Bike: A Marc Brown Arthur Chapter Book #8