When was Ideal Marriage: Its Physiology and Technique, the famous popular scientific treatise and self-help book published in London in 1926 by Dutch gynecologist Theodoor Hendrik van de Velde, retired director of the Gynecological Clinic in Haarlem published at the time?
I know from locally stored knowledge that: Ideal Marriage: Its Physiology and Techniquewas first published at timepoint1929([fact: ["129200685@trueknowledge.com"]])
I used the following facts to provide this answer:
Ideal Marriage: Its Physiology and Technique is having the relationship 'was first published at timepoint' with 1929
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