Speidell, John, fl. 1600-1634.
A breefe treatise of sphaericall triangles, 3 wherein is handled the sixteene cases of a right angled triangle... As also, the twelve cases of an oblique sphaericall triangle ... / by Iohn Speidell ... 3; whereunto is annexed A geometricall extraction formerly published by this author ...
London, : Printed by Edward Allde dwelling neere Christ-church., 1627.
[61,43p.,Clileaf of plates,[61,126p. : ill.
19em. (4to) (See next card) MB
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