Foam-Drive Process for Increasing the Recovery of Oil, report, 1961; (https://digital.library.unt.edu/ark:/67531/metadc38691/m1/1/: accessed July 17, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .
Foam-Drive Process for Increasing the Recovery of Oil, report, 1961; (https://digital.library.unt.edu/ark:/67531/metadc38691/m1/1/: accessed July 17, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .