Portuguese ⇄ Afrikaans Arabic Basque Catalan Chinese Danish Dutch English Estonian Finnish French German Greek Hungarian Icelandic Italian Korean Lithuanian Norwegian Bokmål Persian Polish Romanian Russian Serbian Slovene Spanish Swedish Turkish Ukrainian +

amostragem por grupos
math.	zatia laginketa; laginketa anizkoitz; etapa anitzeko laginketa; fase anitzeko laginketa; konglomeratu-laginketa; mordokako laginketa