[Ultrastructure of the phloem tissue of potato leaves (Solarum tuberosum). II. Study of the disease called purple top].
D008854:Microscopy, Electron; D010935:Plant Diseases; D010942:Plant Viruses / Q000302:isolation & purification*
Ultraestrucutra del floema de las hojas de papa (Solanum tuberosum). II. Estudio de la enfermedad ilamada "Punta morada".