The extent and frequency of passive overland dispersal of freshwater invertebrates as well as the relative importance of different dispersal vectors is not well documented. Although anecdotal evidence ...

This is a preview. Log in through your library . Abstract Aster-yellows virus was carried in monthly transfers from insect to insect by means of needle inoculations of aster leafhoppers. Four such ...

ARE the electric vector (E) and the magnetic vector (B) in electromagnetic waves in vacuo always mutually perpendicular, or are they not always so?