![Biorhythm Calculator - High accuracy calculation | Elementary schools, High school students, Junior high school Biorhythm Calculator - High accuracy calculation | Elementary schools, High school students, Junior high school](https://i.pinimg.com/564x/6d/04/52/6d04528d3ceaace037a623a019fcffb1.jpg)
Biorhythm Calculator - High accuracy calculation | Elementary schools, High school students, Junior high school
![File:Vintage Biomate Handheld Biorhythm Calculator, Certified by the Japan Biorhythm Association, Circa 1970s (11574465133).jpg - Wikimedia Commons File:Vintage Biomate Handheld Biorhythm Calculator, Certified by the Japan Biorhythm Association, Circa 1970s (11574465133).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/b/bb/Vintage_Biomate_Handheld_Biorhythm_Calculator%2C_Certified_by_the_Japan_Biorhythm_Association%2C_Circa_1970s_%2811574465133%29.jpg)
File:Vintage Biomate Handheld Biorhythm Calculator, Certified by the Japan Biorhythm Association, Circa 1970s (11574465133).jpg - Wikimedia Commons
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