Peter Grego has written at least 5 books. Their most popular book is Philip's Moon Observer's Guide with 1 save with an average rating of -⭐.
Series
5 released booksAuthored 20% of series
Philip's Astronomy is a 5-book series with 5 released primary works first released in 1973 with contributions by Peter Grego, Robin Scagell, and David Frydman.