1. Total carbon;Allison,1965
2. Geomorphology and sedimentology of Holocene coastal deposits, Belize;High,1975
3. Study of Soils in the Sustaining Area Around San Antonio in Northern Belize;Olson,1975
4. The bitter harvest of the ancient Maya;Olson;Garden,1979
5. The art and archaeology of hydraulic agriculture in the Maya Lowlands;Puleston,1977