The reason why it was published in the form of a micro sub meson electronic component is that if it were printed in normal book form, an interstellar hitchhiker would require several inconveniently large buildings to carry it around in.
"This book joins the ranks of my all-time favourites. When I first picked this up, it was simply because the cover intrigued me. It was a black and white photo of a man looking out from a balcony."-christine.ity