Early Awakening Report 14 And Under 1973 Germ Free [patched] -

These productions reflected the shifting social attitudes toward sexuality in West Germany during the late 1960s and early 1970s.

Try combining: "Schlaf" AND "keimfrei" 1973 → yields very few results. Instead, look for: (circadian rhythms pioneer, German, Max Planck, though not germ-free). His 1973 work on children’s sleep might mention early awakening. Germ-free models likely from Professor Heinz Günther or Professor Werner Müller-Ruchholtz . early awakening report 14 and under 1973 germ free