by Frederick Lee Moore, Cover title., "A thesis presented to ... Princeton University, 1948. Appendices and additions, 1951.", Main Heritage Compact General, HD9576.A62 M66 1951, Book, Item-ID: i25684140, BIB-ID: 2725824, Includes bibliographical references.
by Andrew Rugg-Gunn. With nine illustrations, including three plates and three maps., Main Heritage Shelves General, JC374 .R83 1940, Book, Item-ID: i10157475, BIB-ID: 1017383, "References" at end of each chapter except the last.
by H. C. Jackson; with an introduction by General Sir Reginald Wingate, bt. ..., Main Heritage Shelves General, DT108.15 .J33 1926, Book, Item-ID: i20413774, BIB-ID: 1198698, Includes bibliographical references (p. 219-220) and index.