Text ( visual ) : unmediated Astronomical algorithms / Jean Meeus. -- Richmond, Va. : Willmann-Bell , c1991. -- 429 p. : ill. ; 24 cm. -- Includes bibliographical references ; Includes index. -- ISBN 0943396352 ; (BA1997942X) ; https://ci.nii.ac.jp/ncid/BA1997942X Author Heading(s): Meeus, Jean. -- Classification(s): LCC : QB51.3.E43 ; DC20 : 520. -- Subject Heading(s): LCSH : Astronomy -- Data processing ; LCSH : Astronomy -- Problems, excercises, etc ; LCSH : Algorithms