The supplemental Study on the Preparation of Heliotropine Comphor Oil
樟脳油よりヘリオトロピンの製法に就て(追補)

Shioichiro Nagai
1922 The Journal of the Society of Chemical Industry Japan  
doi:10.1246/nikkashi1898.25.52 fatcat:i2q6ca2r4vcx5ent4defuqwate