This product is a rare 1958 edition of Roget’s International Thesaurus, published by Thomas Y Crowell. It is a hardcover edition with a total of 1 unit. The thesaurus is written in English and includes a variety of words and phrases for different levels of language proficiency, ranging from beginner to advanced. This international edition contains a comprehensive collection of synonyms and antonyms, making it a valuable resource for anyone looking to enhance their vocabulary and improve their writing skills.