TY - MAP ID - 138215826 TI - Graphic log of cuttings from auger-drill hole 20, northern peninsular Florida AU - Espenshade, Gilbert H. AU - Spencer, Charles Winthrop PY - 1963 PB - Washington (D.C.) U.S. Geological Survey DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:138215826 AB - ER -