00988cam a22002771  4500001001300000003000400013005001700017008004100034010001700075035001900092040004200111042001200153050001800165082001000183100002600193245005900219260004300278300005100321490009000372504003600462650003700498650003000535740004200565810008600607999001700693gs 50000293 DLC20260227111357.0780222s1949    enkaf    b   f000 0 eng c  ags 50000293   a(OCoLC)3660945  aU. S. Geol. Survey.  Libr.cMiHMdDLC  apremarc00aTN405.G7bT38  a553.31 aTaylor, James Howard.10aPetrology of the Northampton sand ironstone formation.  aLondon,bH. M. Stationery Off.,c1949.  avi, 111 p.billus., plates (part col.)c25 cm.1 aMemoirs of the Geological Survey of Great Britain: The Mesozoic ironstones of England  a"List of references": p. 91-96. 0aPetrologyzEnglandzNorthampton. 0aIron oreszGreat Britain.0 aNorthampton sand ironstone formation.2 aGeological Survey of Great Britain.tMemoirs: The Mesozoic ironstones of England.  c28510d28510