What was the publication year ranking l.a. is 1st?
CREATE TABLE "other" (
  "index_year" text,
  "author_editor_source" text,
  "year_of_publication" text,
  "countries_sampled" real,
  "world_ranking_1" text,
  "ranking_l_a_2" text
);
SELECT "year_of_publication" FROM "other" WHERE "ranking_l_a_2"='1st';