4 books in series

501 Verbs

501 Verbs is a 4-book series first released in 1963 with contributions by Christopher Kendris and Thomas R. Beyer.

501 French verbs fully conjugated in all the tenses in a new easy to learn format
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1990 • 1 Reader • 618 pages

501 Russian Verbs: Fully Conjugated in All the Tenses Alphabetically Arranged

1992 • 1 Reader • 533 pages

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501 Spanish Verbs

1963

Dictionary of 501 French Verbs

1970 • 1 Reader • 564 pages