Research and Development Strategy in Biological Technologies: A Patent Data Analysis of Japanese Manufacturing Firms

by Hidemichi Fujii, Kentaro Yoshida, Ken Sugimura
Published 2016-04-01

Knowledge-Based Estimation of Edible Fern Harvesting Sites in Mountainous Communities of Northeastern Japan

by Toshiya Matsuura, Ken Sugimura, Asako Miyamoto, Nobuhiko Tanaka
Published 2013-12-01

Spatial Characteristics of Edible Wild Fern Harvesting in Mountainous Villages in Northeastern Japan Using GPS Tracks

by Toshiya Matsuura, Ken Sugimura, Asako Miyamoto, Hiroshi Tanaka, Nobuhiko Tanaka
Published 2014-02-01