book- The Immortality Factor - Osborn Segerberg - 1972p. 133-134 - mystery of embryo development & L-field solution I would have pointed Segerbert to, written up by Harold S. Burr from 1930's to 1960's, summarized and popularized by Edward W. Russell in Design for Destiny 1972. More here on this when I can otherwise use this blog's search engine for L-field