Studies on the embryology of the Sipunculidae. I. The embryonal envelope and its homologue. ... By John H. Gerould.

no. 1

North American oölogy. By Thomas M. Brewer. Part I.--Raptores and Fissirostres.

Pt. 1

Report of the United States Geological Survey of the territories. F.V. Hayden, United States geologist in charge ... [Final reports or monographs. vol. I]-III, V-XIII.

9

Report of the United States Geological Survey of the territories. F.V. Hayden, United States geologist in charge ... [Final reports or monographs. vol. I]-III, V-XIII.

11

Report of the United States Geological Survey of the territories. F.V. Hayden, United States geologist in charge ... [Final reports or monographs. vol. I]-III, V-XIII.

12

Report of the United States Geological Survey of the territories. F.V. Hayden, United States geologist in charge ... [Final reports or monographs. vol. I]-III, V-XIII.

6

Report of the United States Geological Survey of the territories. F.V. Hayden, United States geologist in charge ... [Final reports or monographs. vol. I]-III, V-XIII.

8

Report of the United States Geological Survey of the territories. F.V. Hayden, United States geologist in charge ... [Final reports or monographs. vol. I]-III, V-XIII.

1

Report of the United States Geological Survey of the territories. F.V. Hayden, United States geologist in charge ... [Final reports or monographs. vol. I]-III, V-XIII.

10

Report of the United States Geological Survey of the territories. F.V. Hayden, United States geologist in charge ... [Final reports or monographs. vol. I]-III, V-XIII.

13

Report of the United States Geological Survey of the territories. F.V. Hayden, United States geologist in charge ... [Final reports or monographs. vol. I]-III, V-XIII.

5

Physiologische studien von dr. Gustav Woldemar Focke. A. Wirbellose thiere ... I. Polygastrische infusorien.

Hft 2

Physiologische studien von dr. Gustav Woldemar Focke. A. Wirbellose thiere ... I. Polygastrische infusorien.

Hft 1

Tanulmányok a véglények köréböl = Studien über Protisten im auftrage der Kön. Ung. Naturwissenschaftlichen Gesellschaft. I. Theil. Entwickelung der der Kenntniss der Protisten.--Ein historischkritischer Überblick. Übers. von Aladár Rózsahegyi.

Th. 1

Berattelse om Framstegen i Insekternas, Myriapodernas och Arachnidernas Naturalhistoria.

1851-1852