Observations of circumstellar envelopes with the NMA. Shibata, K. ; Kasuga, T. ; Deguchi, S. ; Ukita, N. ; Izumiura, H. ; Tsuji, T. Abstract Publication: Astronomical Herald Pub Date: 1991 Bibcode: 1991AstHe..84....5S Keywords: Stellar Envelopes: MM Radiation