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Cover for Albert Leffingwell · An Ethical Problem; Or, Sidelights upon Scientific Experimentation on Man and Animals (Paperback Book) (2021)

An Ethical Problem; Or, Sideligh... (2021)

Albert Leffingwell

Cover for Albert Leffingwell · Vivisection (Paperback Book) (2021)

Vivisection (2021)

Albert Leffingwell

Cover for Albert Leffingwell · Vivisection (Paperback Book) (2017)

Vivisection (2017)

Albert Leffingwell

Cover for Albert Leffingwell · An Ethical Problem (Paperback Book) (2016)

An Ethical Problem (2016)

Albert Leffingwell

Cover for Albert Leffingwell · An Ethical Problem Or, Sidelights Upon Scientific Experimentation on Man and Animals (Tredition Classics) (Paperback Book) (2012)

An Ethical Problem Or, Sidelight... (2012)

Albert Leffingwell

Cover for Albert Leffingwell · Illegitimacy ; And, the Influence of Seasons Upon Conduct: Two Studies in Demography. (Paperback Book) (2010)

Illegitimacy ; And, the Influenc... (2010)

Albert Leffingwell