3 ISO 639: 3-letter codes
12 afa Afro-Asiatic (Other)
17 alg Algonquian languages
27 art Artificial (Other)
29 ath Athapascan languages
30 map Austronesian (Other)
41 bai Bamileke languages
69 cai Central American Indian (Other)
86 crp Creoles and Pidgins (Other)
87 cpe Creoles and Pidgins, English-based (Other)
88 cpf Creoles and Pidgins, French-based (Other)
89 cpp Creoles and Pidgins, Portuguese-based (Other)
102 dum Dutch, Middle (ca. 1050-1350)
106 egy Egyptian (Ancient)
110 enm English, Middle (ca. 1100-1500)
111 ang English, Old (ca. 450-1100)
122 fiu Finno-Ugrian (Other)
125 frm French, Middle (ca. 1400-1600)
126 fro French, Old (842- ca. 1400)
130 gae/gdh Gaelic (Scots)
137 gmh German, Middle High (ca. 1050-1500)
138 goh German, Old High (ca. 750-1050)
144 grc Greek, Ancient (to 1453)
145 ell/gre el Greek, Modern (1453-)
166 ine Indo-European (Other)
168 ina ia Interlingua (International Auxiliary language Association)
174 sga Irish, Old (to 900)
175 mga Irish, Middle (900 - 1200)
176 iro Iroquoian languages
179 jav/jaw jv/jw Javanese
214 oci oc Langue d'Oc (post 1500)
226 luo Luo (Kenya and Tanzania)
227 mac/mak mk Macedonian
250 mis Miscellaneous (Other)
257 mul Multiple languages
266 nic Niger-Kordofanian (Other)
267 ssa Nilo-Saharan (Other)
270 nai North American Indian (Other)
272 nno Norwegian (Nynorsk)
284 oto Otomian languages
292 paa Papuan-Australian (Other)
294 peo Persian, Old (ca 600 - 400 B.C.)
299 pra Prakrit languages
300 pro Provencal, Old (to 1500)
303 roh rm Rhaeto-Romance
311 sal Salishan languages
312 sam Samaritan Aramaic
323 scr sh Serbo-Croatian
331 sit - Sino-Tibetan (Other)
340 wen Sorbian languages
342 sot st Sotho, Southern
343 sai South American Indian (Other)
369 ton Tonga (Tonga Islands)
376 ota Turkish, Ottoman (1500 - 1928)
392 wak Wakashan languages
410 ISO 639: 2-letter codes
425 BN "Bengali" "Bangla"
436 EN "English" "American"
448 GD "Gaelic" "Scots Gaelic"
480 LV "Latvian" "Lettish"