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Momentous Leap Cover featuring Left to Right: Jane Loevinger, Don Beck, Russ Volckmann, Robin Wood, Clare Graves, Jean Piaget, Jean Gebser, Ken Wilber, Susanne Cook-Greuter and Abraham Maslow
Momentous Leap Cover featuring Left to Right: Jane Loevinger, Don Beck, Russ Volckmann, Robin Wood, Clare Graves, Jean Piaget, Jean Gebser, Ken Wilber, Susanne Cook-Greuter and Abraham Maslow