Russian reader: Elementary. 20000 leagues under the sea by J. Verne, annotated (Russian Edition)

850 headwords

From the founder of NEWS IN SLOW RUSSIAN newsinslowrussian.org/

Russian Readers are a range of contemporary and classic Russian and foreign titlesspecially retold for individuals learning Russian. Finishing a novel in anotherlanguage gives you an incredible sense of achievement and will motivate you to continuereading in Russian. The more you read in Russian and your language proficiencyincreases, the more confident you'll be in your linguistic skills.

All Russian Readers include stressing accents inthe Russian text, Russian-English vocabulary, and comprehension questions atthe end of each chapter.

The series is published at six profieicny levels:Starter, Elementary, Pre-Intermediate, Intermediate, Upper Intermediate, andAdvanced. 
The number of words at each level:

Starter (A1) - 300-600 headwords;
Elementary (A2) - 600-1000 headwords;
Pre-intermediate (A2-B1) - 1000-1400 headwords;
Intermediate (B1) - 1400-1700 headwords;
Upper-intermediate (B2) - 1700-2200 headwords;
Advanced (C1) - 2200-3000 headwords.