The principal object of these gatherings, of which the two earlier ones were held in 1928 and 1931 respectively, is to afford opportunities for surveyors from overseas to obtain and exchange up-to-date information as to the progress made in survey matters, and for dis cussions on questions of general interest to surveyors..... No. 41, 58-41. Issued by the Colonial Office. Kuvitettu. Dimensiot 27 ¤ 19. Joissakin karttaliitteissä leima: E.V. Tallinna Tehnikaülikool Raamattukogu - ei muita merkintöjä.