books.google.com - This new fourth edition of Allen's classic Astrophysical Quantities belongs on every astronomer's bookshelf. It has been thoroughly revised and brought up to date by a team of more than ninety internationally renowned astronomers and astrophysicists. While it follows the basic format of the original,...https://books.google.com/books/about/Allen_s_Astrophysical_Quantities.html?id=w8PK2XFLLH8C&utm_source=gb-gplus-shareAllen's Astrophysical Quantities
