CREATE TABLE "other_bibliographic_details" (
  "start_month" text,
  "end_month" text,
  "cover" text,
  "spine" text,
  "indicia" text,
  "masthead" text,
  "number_of_issues" real
);

Question: Which spine has 12 issues?
SQL: SELECT "spine" FROM "other_bibliographic_details" WHERE "number_of_issues"=12;

Question: How many issues end on jan–72?
SQL: SELECT SUM("number_of_issues") FROM "other_bibliographic_details" WHERE "end_month"='jan–72';

Question: Which masthead ends on oct–69?
SQL: SELECT "masthead" FROM "other_bibliographic_details" WHERE "end_month"='oct–69';