50 things to do when you turn 50 : 50 experts on the subject of turning 50 / Fifty things to do when you turn fifty edited by Ronnie Sellers - Portland, Me. : Sellers Pub., c2005. - 303 p. ; 21 cm. ISBN: 9781569065907 (pbk.) 156906590X (pbk.) Subjects--Topical Terms: Middle ageMiddle-aged persons -- Conduct of life