All of these results were proven by efficacy tests carried out at a well-known clinical institute in Milan. The products of the line have been certified as vegan by the international body VEGANOK.
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Notes: Afrikaans text. 4th edition 1968. Signed by previous owner. The dust jacket is a little shelf rubbed, chipped, faded marks, small creases and edge worn. Now protected in cellophane. The binding is excellent.
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