JOSHI GAKUSEI DARAKU MANYUARU
("Manual for Women Students Regarding Depravity")
ADVICE TO WOMEN ON WHAT TO AVOID IN RELATIONSHIPS
Published by Hikou Mondai Kenkyuukai ("Research Institute on the Delinquency Problem") December 1995, particularly pages 72-75. Available at Amazon Japan.
Information courtesy of Michael H. Fox (thanks).
Still in print, this manual compares foreign penis sizes, and warns
its intended female audience that having relations with foreigners is
problematic because "they don't have money", "their temperament is too
strong", "they want a lot of sex", and "there are a lot of junkies".