510.8 Whi C Whittaker, Edmund Taylor, 1873- The calculus of observations; a treatise on numerical mathematics, by E. T. Wittaker... and G. Robinson... 2d ed. London and Glasgow, Blackie & son limited, 1929 xvi, 395 p. fold. tables, diagrs. 23 cm "First print 1924... Fourth impression 1929".