Rosemary Biggs
... that Rosemary Biggs and her colleagues discovered the Christmas factor?
... that <b id="mwAQY"><a href="./Rosemary_Biggs" id="mwAQc" rel="mw:WikiLink" title="Rosemary Biggs">Rosemary Biggs</a></b> and her colleagues discovered the Christmas factor?<!--Special occasion hook for December 25-->