Practical birth control : being a revised version of Safe marriage / by Ettie A. Hornibrook.

London : W. Heinemann, 1928.

xiii, 53 pages : illustrations ; 19 cm

8th printing [rev.].

First published under title: Safe marriage; London : W. Heinemann, May 1922

A revised edition was published in 1927, also calling itself a 6th impression. There was a 7th impression in March 1928 and an 8th impression in August 1928. The 8th impression contains material which is additional to the 6th.

Copy 1 Note: August 1928 printing.