| http://www.w3.org/ns/prov#value | - Comparisons among modes can be difficult, however, because the types of freight carried by different modes often differ considerably, and care must be taken to account for the required transport at each end of the trip. 62. ???Roll-on, roll-off??? vessels can load and unload their cargo by rolling it directly on and off the vessel without using cranes. 63.
|
