52 offprints. Albert Levan Botanist and Geneticist England On Chemical Methods by which

On Chemical Methods by which the Eggs of a Mollusc (Lottia Gigantea) can be Caused to Become Mature (1905)

The "Presence and Absence" Hypothesis" (1909)

Fourth Edition

Nouvelles Observations et Hypotheses sur la Letalite chez les Hybrides (1962)

52 offprints. Albert Levan Botanist and Geneticist England On Chemical Methods by whichTitle 52 offprints. Albert Levan Botanist and Geneticist Author Levan, Albert Binding PAPERBACK Publisher various, mostly 1930s Condition Very Good Description A few are tape repaired, some have prior owners name or stamp, else very good. Botanist and Geneticist. 1905 1998. Co authored the report that humans had 46 Chromosomes and not 48. 52 offprints including duplicates, from a single page to over 100 pages. Mostly 1930s. Four have "with the