TY - BOOK AU - Oman ,P.W AU - Knight ,W.J AU - Nielson ,M.W TI - Leafhoppers ( cicadellidae ): a bibliography, generic check-list and index the world literature 1956 -1985 SN - 0851986900 PY - 1990/// CY - U.K PB - C.A.B International ER -