Helvenston, Patricia A.
Desperately seeking trance plants : testing the "three stages of trace" model / By Patricia A. Helvenston and Paul G. Bahn. -- New York : RJ Communications LLC, cop. 2002 - 58 p.
ISBN 0-9700741-1-5
581.19
Desperately seeking trance plants : testing the "three stages of trace" model / By Patricia A. Helvenston and Paul G. Bahn. -- New York : RJ Communications LLC, cop. 2002 - 58 p.
ISBN 0-9700741-1-5
581.19