Astronomy

MORRISON, P.

Lancaster, American Physical Society, 1957.

LANCZOS, KORNEL.

Berlin, Julius Springer, 1923.

LAGRANGE, JOSEPH LOUIS.

(Berlin, Haude et Spener, 1771).

LOCKYER, JOSEPH NORMAN.

London, Macmillan and Co., 1887.

HERSCHEL, WILLIAM.

London, Peter Elmsly, 1795.

GAMOW, G.

London, Macmillan and Co, 1948.