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Books about Yoshimaro:
Yacho to ikita 80-nen: Chorui no kenkyu to hogo ni shogai o sasageta Yamashina Yoshimaro (PHP ai to kibo no nonfikushon... by Bunryo Okamoto (1990)
[Bibliography of Yoshimaro Yamashina] by Yoshimaro Yamashina (1978)
Wiki information Yoshimaro:
Marquis Yoshimaro Yamashina was a Japanese ornithologist. He was the founder of the Yamashina Institute for Ornithology.
The Yamashina Institute for Ornithology is a non-profit scientific research organization in Japan, specializing in ornithology studies.