Recent changes in sea level along the New England Coast: new archaeological evidence.- Washington, D.C.

von Barghoorn, Elso S.
Veröffentlicht in Science; 117.1953, S. 597-598
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Identification of the pollen of maize, Teosinte and Tripsacum by phase contrast microscopy. - Harvard.

von Irwin, Henry
Veröffentlicht in Botanical Museum leaflets ; 21. 1965, No. 2, S. 37-57 : 7 Taf.
1965.