1. Biogeochemical evidence for subsurface hydrocarbon occurrence, Recluse Oil Field, Wyoming: Preliminary results;Dalziel;U.S. Geol. Surv., Circ.,1980
2. Petroleum microseepage at Cement, Oklahoma: evidence and mechanism;Donovan;Bull. Am. Assoc. Pet. Geol.,1974
3. Stable isotope anomalies in surface rocks and helium anomalies in soil-gas over oil fields: causes and correlations;Donovan,1980
4. Aeromagnetic detection of diagenetic magnetite over oil fields;Donovan;Bull. Am. Assoc. Pet. Geol.,1979
5. Epigenetic zoning resulting from seepage-induced redox gradients in surface and near-surface rocks, Velma Oil Field, Oklahoma — a symposium;Donovan;Shale Shaker,1981