Ruth,

here is a very useful reference:

E.C.Amoroso and J.P.Jewell, The exploitation of the Milk-Ejaculation reflex by primitive people. In A.E.Mourant and F.E.Zeuner ( eds): Man and Cattle. Royal Anthropological institute Occasional Paper 18, pp 126-137 + plates XIII - XVI.

With Greetings, Louise van Wijngaarden

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