| Title: The Cause And Control Of Sex In Human Offspring Author: Jackson, R. Clay Access No.: 14556 Publisher: Self-Published Edition: 1926 Binding: Hardback Signed: Pages: 206 ISBN: Condition: Good. Wear on the book corners as well as the top and bottom of the spine. Description: The author's research leads him to propose sun light during pregnancy as a factor in the sex of a child. He has other interesting theories. There are b&w photos and many weather charts. Keywords: Eccentric, gender, sex Price: $25 |