Ringu Tulku Rinpoche The ngondro : foundation practices of mahamudra / Ringu Tulku Rinpoche ; edited by Margaret Ford and Mary Heneghan. - Third Edition 2013. - 137 pages : colour illustration ; 21 cm. - The Heart Wisdom Series Foundation Practices of Mahamudra No:2 . ISBN: 9780953448968 Subjects--Topical Terms: Buddhist meditations.