00900nam0-22003131i-450-99000202293040332120021010000202293FED01000202293(Aleph)000202293FED0100020229320021010d--------km-y0itay50------baita<<The >>aphid genus periphyllusa systematic, biological, ecological study.E.O. Essig, Frieda AbernathyBerkeleyUniversity of California Pressa1952166 p.22 cmRincoti: OmotteriAfidi595.752Essig,Edward Oliver85316Abernathy,FriedaITUNINARICAUNIMARCBK99000202293040332161 IV F.5/262574DAGENDAGENAphid genus periphyllus405301UNINAING01