Gastaldo, Robert A.

Deciphering earth history : = a laboratory manual with Internet exercises / by: Savrda, Charles.; Lewis, Ronald D.; Gastaldo, Robert A. (Language materials, printed)

Nature through time = virtual field trips through the nature of the past / by: Martinetto, Edoardo.; Tschopp, Emanuel.; Gastaldo, Robert A.; SpringerLink (Online service) (Electronic resources)