Darling Ch. Drops and their Education and Movement. Three Popular Lectures In Russian /Darling Ch. Kapli i ikh obrazovanie i dvizhenie. Tri populyarnye lektsii Academy of Sciences of the USSR Scientific Popular Series of Academy of Sciences of the USSR 1937. 104 p. We have thousands of titles and often several copies of each title may be available. Please feel free to contact us for a detailed description of the copies available. SKUalbb5e0adcf9d668e9a.