by Helmuth von Glasenapp ; translated from the original German by G. Barry Gifford ; and revised by the author ; edited by Hiralal R. KapadiaP.V. Research Institute1991
by Helmuth von Glasenapp ; translated from the original German by G. Barry Gifford ; edited by Hiralal R. KapadiaThe Trustees, Bai Vijibai Jivanlal Panalal Charity Fund1942