This report concerns Scirpus, forests and a quest to find a method for documenting rainfall changes in the ancient past. I begin with the middle.
"Report: The mystery lies in the Scirpus,"
Rapa Nui Journal: Journal of the Easter Island Foundation: Vol. 21
, Article 4.
Available at: https://kahualike.manoa.hawaii.edu/rnj/vol21/iss2/4