Biblio
“Dendrochronology Of Bristlecone Pine”. Tucson: Laboratory of Tree-Ring Research.
. 1984. Ferguson, Graybill_ Dendrochronology of Bristlecone Pine_1984.pdf (1.34 MB) . 1998.
“Unsolicited Proposal Submitted To The Department Of Energy For Dendrochronology Of Bristlecone Pine”. Tucson: Laboratory of Tree-Ring Research.
. 1980. Ferguson_Unsolicited Proposal Submitted to the Department of Energy for Dendrochronology of Bristlecone Pine_1980.pdf (9.77 MB)