Whittaker, E. T. 1873-1956. The calculus of observations; a treatise on numerical mathematics, / [[Book] :] E. T. Whittake. - 4th ed. - London [etc.] : Blackie and son limited, 1924. - xvi, 397 p. : fold. tables. diagrs. ; 23 cm. All Ages. LCCN: 24014194 Subjects--Topical Terms: Mathematics.Calculus. Dewey Class. No.: 510 National Library of Medicine Call No.: / WC