Organic remains of a former world. An examination of the mineralized remains of the vegetables and animals of the antediluvian world; generally termed extraneous fossils Q Science
Reportorium der höheren Mathematik; Definitionen, Formeln, Theoreme, Literatur. Autorisirte deutsche Ausg. nach einer neuen Bearb. des Originals von A. Schepp Q Science
According to season : talks about the flowers in the order of their appearance in the woods and fields Q Science
