This edition of Our Bodies, Ourselves was published in 1978, followed by another in 1988, by Penguin. The second edition is reportedly still in print.
If you would like more, please contact either the OBOS Global Initiative or the publisher at:
Address: Penguin Books, 27 Wrights Lane, London W8 5TZ
If you are looking for a copy in the US, you may try Books Britain NYC at 212-749-4713 (Phone) or 212-749-7509 (Fax).