18 Vintage 1935/36 Science & Chemistry Leaflet Booklet

The Science Leaflet including The Chemistry Leaflet. Misc. issues from 1935 and 1936. Average about 40 pages each. These are really packed with a wide variety of subjects and very interesting. Many photo illustrations. Articles on metals, plants, physics,biology, mining, minerals, gases and much more. Very light wear with bright and clean pages. Covers intact. I did not see any writing on pages. Any question just ask.