I think Gary's answer hits the nail on the head. Dvorak established a new paradigm for the cello concerto as a symphonic work equal in substance and scale to a major symphony. read more
Dvorak's B minor Concerto has a long orchestral introduction because it is a symphonic concerto, one written not primarily for display of virtuosity by the soloist but to write expansive music which allowed the cello to engage in a musical dialogue of some complexity with the orchestra. read more
Here’s one — Cello Concerto In B Minor - Cello/Piano. It’s a Schirmer edition, edited by Janos Starker. The price (at least at this site) is $24.99, and it consists of a cello part and a reduced piano accompaniment. read more
The Cello Concerto in B minor, Op. 104, B. 191, is the last solo concerto by Antonín Dvořák. It was written in 1894–95 for his friend, the cellist Hanuš Wihan, but was premiered by the English cellist Leo Stern. read more