Santiago de Chile: Editorial Nascimento, 1940. 146p., 7x5 inch plain printed wraps with titling in blue. First blank bears a substantial Inscription by Molina, a Chilean academic, who traveled to the US for the 8th Pan American Scientific Congress, and spent time in New York thereafter. Both periods are thoroughly described. Unfortuneately, a fair-only copy with much ugly exterior dampstaining, dust-soil, and partial splitting of front joint. As is, a reading copy.