Cohen, I. B. (1950). Some Early Tools of American Science: An Account of the Early Scientific Instruments and Mineralogical and Biological Collections in Harvard University. Harvard University Press. https://doi.org/10.4159/harvard.9780674368446
Chicago-Zitierstil (17. Ausg.)Cohen, I. Bernard. Some Early Tools of American Science: An Account of the Early Scientific Instruments and Mineralogical and Biological Collections in Harvard University. Cambridge, Mass: Harvard University Press, 1950. https://doi.org/10.4159/harvard.9780674368446.
MLA-Zitierstil (9. Ausg.)Cohen, I. Bernard. Some Early Tools of American Science: An Account of the Early Scientific Instruments and Mineralogical and Biological Collections in Harvard University. Harvard University Press, 1950. https://doi.org/10.4159/harvard.9780674368446.