This book, titled "Essential Japanese Grammar," is a valuable resource for anyone looking to learn the language. It contains 156 pages of detailed information on Japanese grammar, presented in an easy-to-understand format. The book is a part of the Dover Language Guides Essential Grammar Ser. series and was published by Dover Publications, Incorporated in 1963. The book measures 8.7 inches in length, 5.5 inches in width, and 0.4 inches in height, making it a convenient size for carrying around. It weighs 6.5 ounces, which is also light enough to take on the go. The book is a trade paperback format and is written in English. It is perfect for anyone interested in learning Japanese or looking to improve their language skills.