Le hr buch ▁der ▁Ep he - Sp rache , ▁ 1 8 9 1 , ▁actually ▁the ▁first ▁compar ative ▁G be ▁grammar ), ▁J . ▁Kn üs li ▁( E we - G erman - English ▁V oc ab ul ary , ▁ 1 8 9 2 ) ▁and ▁Maurice ▁Del af os se ▁( Man uel ▁D ah om é en ▁( F on ), ▁ 1 8 9 4 ). ▁ ▁In ▁ 1 9 0 2 ▁the ▁mission ary ▁D ied rich ▁Hermann ▁West ermann ▁contributed ▁an ▁article ▁titled ▁" Be it rä ge ▁zur ▁Ken nt nis ▁der ▁Ye we - Sp ra chen ▁in ▁T ogo " ▁to ▁Zeitschrift ▁für ▁Af rik an ische ▁und ▁Ocean ische ▁Sp ra chen . ▁West ermann ▁became ▁one ▁of ▁the ▁most ▁product ive ▁and ▁influ ential ▁writers ▁on ▁the ▁G be ▁languages , ▁and ▁his ▁output ▁domin ated ▁the ▁G be ▁literature ▁and ▁analysis ▁of ▁the ▁first ▁half ▁of ▁the ▁tw enti eth ▁century . ▁He ▁wrote ▁mainly ▁on ▁the ▁Western ▁G be ▁languages , ▁especially ▁on ▁E we ▁( though ▁he ▁often ▁used ▁the ▁term ▁' E we ' ▁to ▁denote ▁the ▁G be ▁dialect ▁continu um ▁as ▁a ▁whole ). ▁Among ▁his ▁most ▁important ▁works ▁on ▁E we ▁are ▁his ▁A ▁Study ▁of ▁the ▁E we ▁language ▁( 1 9 3 0 ) ▁and ▁W ör ter buch ▁der ▁E we - Sp rache ▁( 1 9 5 4 ). ▁ ▁Renaissance ▁du ▁G be ▁ ▁From