"Milagro Más Grande Del Mundo" by Og Mandino is a 2015 self-help book written in Spanish. Published by CreateSpace, the trade paperback format measures 9 inches in length, 6 inches in width, and 0.2 inches in height, with a weight of 5.9 ounces. The book contains 78 pages filled with motivational and inspirational content, making it a valuable resource for readers seeking guidance and encouragement. With its compact size and uplifting storyline, this book is sure to inspire and uplift any reader who comes across it.