Also teaching and practice aids, Russian-English vocabulary, biographical/critical introductions to each selection, study questions, more. Especially helpful are the stress accents in the Russian text, usually found only in primers.
She teaches ESL, Russian, and Spanish. Her first publications appeared 17 years ago. The other last names of Zoia by marriages in the USA are Burkhart and Sproesser. The books might have been published first under those names.