Astronomy

UREY, HAROLD C.

London, Oxford University Press, 1952.

BESSEL, FRIEDRICH WILHELM - HERSCHEL, J.F.W.

London, George Barclay, 1847.

EULER, LEONHARD.

(Berlin, Haude et Spener, 1748).

ALEXANDER, A.F. O' D.

N.Y., Dover Publications, (1980).

ZINNER, ERNST.

Berlin, Julius Springer, (1931).

KEPLER, JOHANNES.

München u. Berlin, R. Oldenburg, 1930

EDDINGTON, A.S.

London, Macmillian, 1914.

EDDINGTON, A.S.

Oxford, Clarendon Press, 1927.

CHANDRASEKHAR, SUBRAMANYAN.

Lancaster, American Physical Society, 1943.

CASSINI, JACQUES (CASSINI II).

(Paris, Jean Boudot, 1706).

HERSCHEL, WILLIAM.

(London, Bulwer and Co., 1806).

GYLDÉN, HUGO.

Berlin, Stockholm, Paris, Beijer, 1893.

GYLDÉN, HUGO.

Berlin, Stockholm, Paris, Beijer, 1887.

GYLDÉN, HUGO.

(Berlin, Stockholm, Paris, Beijer, 1882.)

FRIEDMANN, ALEXANDER (+) ALBERT EINSTEIN.

Berlin, Julius Springer, 1922-24.

MILNE, E.A. (EDWARD ARTHUR). - THE "COSMOLOGICAL PRINCIPLE".

Oxford, The Clarendon Press, 1935.

HERSCHEL, WILLIAM.

(London, Bulwer and Co., 1806).

HERSCHEL, WILLIAM.

London, Lockyer Davis and Peter Elmsly, 1783.