Richardus, P. Project surveying; general adjustment and optimization techniques with applications to engineering surveying P. Richardus assisted by J. S. Allman. - Amsterdam North-Holland Pub. Co. c1966. - xii, 467 p. ill., 5 fold. maps (in pocket) 25 cm. Includes bibliographies and index. ISBN: 66009028 Subjects--Topical Terms: Surveying.