Text-book of the embryology of invertebrates / by Dr. E. Korschelt [and] Dr. K. Heider. Tr. from the German.

pt. 4

The evolution of man: a popular exposition of the principal points of human ontogney phylogeny / From the German of Ernst Haeckel.

2

The evolution of man: a popular exposition of the principal points of human ontogeny and phylogeny. From the German of Ernst Haeckel.

2

Text-book of the embryology of invertebrates / by Dr. E. Korschelt [and] Dr. K. Heider. Tr. from the German.

pt. 1

Cosmos : a sketch of a physical description of the universe / By Alexander von Humboldt ; Translated from the German by E.C. Otté.

4

Cosmos : a sketch of a physical description of the universe / By Alexander von Humboldt ; Translated from the German by E.C. Otté.

2

Text-book of the embryology of invertebrates / by Dr. E. Korschelt [and] Dr. K. Heider. Tr. from the German.

pt. 3

Cosmos : a sketch of a physical description of the universe / By Alexander von Humboldt ; Translated from the German by E.C. Otté.

1

The evolution of man: a popular exposition of the principal points of human ontogeny and phylogeny. From the German of Ernst Haeckel.

1

Cosmos : a sketch of a physical description of the universe / By Alexander von Humboldt ; Translated from the German by E.C. Otté.

5