Leite Junior, R.P. Cancro citrico. Prevencao e controle no Parana [Citrus canker. Prevention and controlling in the state of Parana, Brazil! - Londrina, PR (Brasil): 1990. - 51 p. - Circular - Fundacao Instituto Agronomico do Parana (Brazil) no. 61 ISSN 0100-3056 . 18 ref.; 10 ref.; Bibliography p. 45-51 (75 ref.); Summaries (En, Pt) Subjects--Topical Terms: CANCRO CITRICOFRUTA CITRICACONTROLE QUIMICOPARANA