TY  - RPRT
TI  - Concept identification with natural material.
AU  - T Indow
AU  - M Kobayashi
AU  - S Dewa
PY  - 1975
DO  - 10.1016/0001-6918(75)90005-0
UR  - https://pubmed.ncbi.nlm.nih.gov/1217517/
ID  - 1217517
ER  -