Can someone provide/find the Japanese name of "Zen-Nippon Chick Sexing School"? I'm curious about it and want to find some primary sources, but I can't even find the name.

I'm not saying it's bullshit by the way; I'm fairly familiar with Japanese, after reading https://ja.wikipedia.org/wiki/%E3%83%8B%E3%83%AF%E3%83%88%E3... it looks to me that indeed so-called "Vent sexing" was discovered by Japanese in 1920s (the exact year isn't very consistent, Wikipedia says it was 1924 for Japanese version and 1933 for English version; while this article says 1927).

But I can't find any mention about a school. I tried to search "全日本 初生雛鑑別" with various words of "School" in Japanese but find nothing.