What makes a good bookseller? The answer may not be as straightforward as it seems.
in shortening each title's 
frequency of new releases.
في اختزال تكرار كلّ عنوان
من الإصدارات الجديدة
die Zeit zwischen einzelnen Neuerscheinungen
immer knapper zu gestalten.
nell'accorciare la frequenza
delle nuove uscite di ogni serie.
de reduzir a frequência de cada novo lançamento.
всё реже и реже выпускать новые тома!