The product is a revised edition of Roget’s International Thesaurus, originally published in 1946 by Thomas Y Crowell. The 1950 edition features updated content and is part of the Crowell Com. series. This hardcover thesaurus is in English and serves as a valuable resource for language learners and writers at various levels of expertise. With its international edition, it offers a comprehensive collection of synonyms and antonyms to enhance vocabulary and communication skills.