@book{Nichols-1992,
  address    = {London / Chicago},
  author     = {Nichols, Johanna},
  publisher  = {University of Chicago Press},
  title      = {Linguistic Diversity in Space and Time},
  year       = {1992},
  iso_code   = {dbl; cid; sis; sll; kpw; ctm; ygr; dhv; see; sad; sue; wbk; hae; hye; fvr; kyh; sht; kjd; gld; jqr; set; ain; yrk; tiw; sln; paw; che; tyv; mig; ute; tlf; kjs; jiv; gbc; nll; yuc; miq; cyb; ckt; vam; gbp; ppl; pei; wac; gcd; yok; hau; mnk; tsz; ktz; kio; kut; kmn; sua; wit; fut; hix; tea; mdx; ood; nas; kjq; aey; tun; yad; clo; gug; wnd; nrb; kmg; amp; tqw; kfe; cho; myp; jig; lgg; ras; qui; mpc; nmu; csz; xra; skd; zun; ung; amh; naq; lui; eus; arn; inz; ram; auc; mas; yor; kiw; crk; wao; kyx; tkm; mpb; nav; nuy; cha; abt; aqp; kew; kpv; urf; niv; mph; wyb; khk},
  olac_field = {syntax; typology; semantics; general_linguistics},
  wals_code  = {ori; uhi; yuk; hua; wao; wap; ckr; cre; jiv; ton; sdw; myi; orh; cyv; mdk; hix; hau; dum; ame; tiw; diz; tkl; kob; put; cin; yuc; nug; wem; maa; zun; kiw; ala; kut; awt; fur; lui; amb; ctm; tun; pip; coo; nas; snc; kew; wrn; sal; map; pur; lug; amh; cct; wgl; nai; mss; aco; kat; nar; niv; mlk; chc; ngi; sue; grr; ung; kho; ain; knu; krk; gbb; cha; win; mau; juh; nah; yor; shs; chk; snt; dji; fut; tmr; tuv; qui; bsq; gua; nen; prh; cjo; jaq; chx; sul; nav; tlf; yag; kha; mis; dyi; ywl; pwn; kzy; arm; chi; mne; siu; cku; mxc; kot; dre; atk; syu; kio; ood}
}