Add this copy of International Halley Watch Amateur Observers' Manual to cart. $21.60, very good condition, Sold by Rob the Book Man rated 4.0 out of 5 stars, ships from Vancouver, WA, UNITED STATES, published 1983 by Berkeley Heights, New Jersey, U.S.A. : Enslow Pub Inc.
Add this copy of International Halley Watch Amateur Observers' Manual to cart. $34.95, good condition, Sold by J.E. Miles, A Bookseller rated 5.0 out of 5 stars, ships from OCEANSIDE, CA, UNITED STATES, published 1983 by Enslow.
