Khác biệt giữa bản sửa đổi của “Karl Ernst von Baer”

|nationality = {{Lá cờ|Estonia}}<ref>{{chú thích tạp chí |url=http://www.reproduction-online.org/content/62/1/1.full.pdf+html |title=An historical look at embryo transfer |author=K. J. Betteridge |journal=Reproduction. The Journal of the Society for Reproduction and Fertility |quote=Three years later, the Estonian, Karl Ernst von Baer, finally found the true mammalian egg in a pet dog (von Baer, 1827).|year=1981 |volume=62|pages=1–13}}</ref><ref>{{chú thích sách |url=http://books.google.com/books?id=xI6wma5TNTUC&pg=PA47&lpg=PA47&dq=uexk%C3%BCll+estl%C3%A4nder&source=bl&ots=sTvogwy6zQ&sig=IqHg0FEEmfzr3FTGPaDZhWYC7_M&hl=et&ei=OQSXTqK3O7Pa4QSKx72WBA&sa=X&oi=book_result&ct=result&resnum=1&ved=0CBwQ6AEwAA#v=onepage&q=estl%C3%A4nder&f=false|title=Zwischen den Sternen: Lichtbildarchive. Was Einstein und Uexküll, Benjamin und das Kino der Astronomie des 19. Jahrhunderts verdanken |chapter=Karl Ernst von Baer |page=47 |year=2006 |author=Karl Clausberg |location=Berlin |publisher=Akademie Verlag |language=Đức |quote=...- dreizehn Jahre später von dem berühmten Estländer Biologen Karl Ernst von Baer...}}</ref><ref>{{chú thích tạp chí |url=http://hektoeninternational.org/HektoenInternational.NeuralDarwinism2.html |title=Evolution from recapitulation theory to Neural Darwinism |author=J.M.S. Pearce, M.D. |journal=Hektoen International. A Journal of Medical Humanities |volume=2 |issue=2 |year=2010 |access-date=2014-11-23 |archive-date=2012-03-29 |archive-url=https://web.archive.org/web/20120329104606/http://hektoeninternational.org/HektoenInternational.NeuralDarwinism2.html |dead-url=yes }}</ref>