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by Fritjof Capra; Pier Luigi Luisi
by CAPRA, FRITJOF
by Callenbach, Ernest; Capra, Fritjof; Goldman, Lenore; et al.
by Capra, Fritjof; Luisi, Pier Luigi
by Capra, Fritjof
by Capra, Fritjof; Mattei, Ugo