00988cam a22002771 4500 gs 50000293 DLC 20260227111357.0 780222s1949 enkaf b f000 0 eng c gs 50000293 (OCoLC)3660945 U. S. Geol. Survey. Libr. MiHM DLC premarc TN405.G7 T38 553.3 Taylor, James Howard. Petrology of the Northampton sand ironstone formation. London, H. M. Stationery Off., 1949. vi, 111 p. illus., plates (part col.) 25 cm. Memoirs of the Geological Survey of Great Britain: The Mesozoic ironstones of England "List of references": p. 91-96. Petrology England Northampton. Iron ores Great Britain. Northampton sand ironstone formation. Geological Survey of Great Britain. Memoirs: The Mesozoic ironstones of England. 28510 28510