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Appendix D – Country Data Codes — comparison of FIPS 10, ISO 3166, and STANAG 1059 country codes; List of all countries with their 2 digit codes (ISO 3166-1) (CSV, JSON) Archived 2017-08-25 at the Wayback Machine. Comprehensive country codes: ISO 3166, ITU, ISO 4217 currency codes and many more (CSV, JSON) Archived 2017-08-26 at the Wayback ...
Genaille–Lucas rulers (also known as Genaille's rods) are an arithmetic tool invented by Henri Genaille, a French railway engineer, in 1891. The device is a variant of Napier's bones . By representing the carry graphically, the user can read off the results of simple multiplication problems directly, with no intermediate mental calculations .
Herodotus (430 BC) had only vaguely heard of the Cassiterides, "from which we are said to have our tin", but did not discount the islands as legendary. [2] Later writers—Posidonius, Diodorus Siculus, [3] Strabo [4] and others—call them smallish islands off ("some way off," Strabo says) the northwest coast of the Iberian Peninsula, which contained tin mines or, according to Strabo, tin and ...
ISO 3166-1 alpha-3 – three-letter country codes which may allow a better visual association between the codes and the country names than the 3166-1 alpha-2 codes. ISO 3166-1 numeric – three-digit country codes which are identical to those developed and maintained by the United Nations Statistics Division, with the advantage of script ...
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Note that not all countries have MIDs; those without are typically landlocked, with no access to international waters. Sorting MID assignments in numerical order reveals a regional structure, with the first digit: 2 assigned to Europe, 3 to North America and the Caribbean, 4 to Asia (except the southeast),
Counting rods (чнн) are small bars, typically 3–14 cm (1" to 6") long, that were used by mathematicians for calculation in ancient East Asia. They are placed either horizontally or vertically to represent any integer or rational number. The written forms based on them are called rod numerals.
Ictis, or Iktin, is or was an island described as a tin trading centre in the Bibliotheca historica of the Sicilian-Greek historian Diodorus Siculus, writing in the first century BC. While Ictis is widely accepted to have been an island somewhere off the southern coast of what is now England, scholars continue to debate its precise location.