Nature's Remedies - A Popular Treatise on the Chemistry of Herbs - Their Curative Powers and use in Cosmetics, Culinary Preparations, Wine and Liqueurs, Etc J. W. Bell E-Book (epub)

Searching Behaviour W. J. Bell E-Book (pdf)

Katalyse in Lösungen J. W. Baker, R. P. Bell, P. Chovin E-Book (pdf)