Plant, Richard M. Formulae for the mariner / by Richard M. Plant. - 2nd ed. - Centreville, Md. : Cornell Maritime Press, 1986. - xiv, 93 p. : ill. ; 28 cm. ISBN: 0870333615 (pbk.) : $12.50 LCCN: 86047710 Subjects--Topical Terms: Navigation--Mathematics. LC Class. No.: VK555 / .P57 Dewey Class. No.: 623.88/01/5121