Output risk in tuscan agriculture in the late 19th and early 20th centuries (1999).

1o utput risk in tuscan agriculture in the late 19th and early 20th centuries * (1999).

The American System and the Scientifi c Revolution of the Late 19 th and Early 20 th Centuries

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Beijerinckand thebioluminescent bacteria : microbiological experiments in the late 19 thand early 20 th centuries

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Medical Developments in the 19 Th and Early 20 Th Centuries

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