Alert Notice PEP #A: Special Alert Notice to PEP Observers [HR 913 = HD 18894]
September 22, 1980
THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
187 Concord Avenue, Cambridge, MA 02138 USA
Tel. 617-354-0484
SPECIAL ALERT NOTICE TO PEP OBSERVERS
In a recent letter from Dr. Richard Wade of the California Institute of Technology, he wrote: