ISBN-13: 9780992491901 / Angielski / Miękka / 2014 / 172 str.
"An essential book of good" is the first book in an action sports life style adventure series, in which two characters by the name of Yucckie & Mahzie explore the world as they see it. Life lessons, solutions, ethical fun, logic & mathematical wisdom are the core values of this fictional series that has been created for the "joyful kid" in all people.