Many thanks to Professor Witzel and Srinvas Parchuri for supplying the bibliographical references that I needed. Bh.K. ___________________________ Bhadriraju Krishnamurti H.No. 12-13-1233, "Bhaarati" Street 9, Tarnaka Hyderabad 500017 (A.P.), India Telephone:40-7019665 E-mail:<BHK at HD1.VSNL.NET.IN>