00638nam a2200181Ia 4500001001000000003000500010008004100015010001100056040000900067082001900076100001700095245012200112260007500234300001500309440001600324500004600340650007000386Para_8626CHAP220125s1921    xx            000 0 und d  a207437  cCHAP  aPA-C 595.752A6  aDavidson, J.  aBiological studies of aphis rumicis L. :b appearance of winged forms, appearance of sexual forms  /c by J. Davidson  as.l. :b Institute of Plant Pathology. Rothamsted Experimental Station  a304-322 p.  aAphidae; 27  aEncuadernado con otros impresos similares  ax Afididos x Colecciones de escritos x  Afididos x Biología