DISSEMINATION OF VIRUSES OF ORNAMENTALS AND APPROACHES TO REDUCING SPREAD AND IMPROVING METHODS OF DIAGNOSISLAWSON RH.1980; ADA HORTIC.; ISSN 0567-7572; NLD; DA. 1980; NO 110; PP. 143-152; BIBL. 10 REF.Conference Paper

EFFECTS OF LIGHT INTENSITY, PHOTOPERIOD AND TEMPERATURE ON SYMPTOM EXPRESSION AND HOST AND VIRUS ULTRASTRUCTURE IN SAPONARIA VACCARIA INFECTED WITH CARNATION ETCHED RING VIRUSHEARON SS; LAWSON RH.1981; PHYTOPATHOLOGY; ISSN 0031-949X; USA; DA. 1981; VOL. 71; NO 6; PP. 645-652; BIBL. 13 REF.Article

HYDRANGEA VIRESCENCE: SYMPTOM SUPPRESSION IN PLANTS INFECTED WITH THE MYCOPLASMALIKE ORGANISM (MLO) ASSOCIATED WITH MILD DISEASE CHALLENGE INFECTED WITH THE SEVERE DISEASE MLOLAWSON RH; SMITH FF.1980; ADA HORTIC.; ISSN 0567-7572; NLD; DA. 1980; NO 110; PP. 329-334; BIBL. 8 REF.Conference Paper

THREE STABLE TYPES OF HYDRANGEA VIRESCENCE THAT DIFFER IN SEVERITY IN FOLIAGE AND FLOWERSLAWSON RH; SMITH FF.1980; PLANT DIS.; USA; DA. 1980; VOL. 64; NO 7; PP. 659-661; BIBL. 8 REF.Article

CARNATION ETCHED RING VIRUS INCLUSIONS: SEROLOGY AND ULTRASTRUCTURE OF ALKALINE-TREATED INCLUSIONSLAWSON RH; HEARON SS.1980; PHYTOPATHOLOGY; USA; DA. 1980; VOL. 70; NO 4; PP. 327-332; BIBL. 12 REF.Article

TOPOLOGICAL FORMS OF CAULIFLOWER MOSAIC VIRUS NUCLEIC ACID.CIVEROLO EL; LAWSON RH.1978; PHYTOPATHOLOGY; U.S.A.; DA. 1978; VOL. 68; NO 1; PP. 101-109; BIBL. 28 REF.Article

ULTRASTRUCTURE OF EXTRACTED CARNATION ETCHED RING VIRUS INCLUSION BODIES TREATED WITH PROTEOLYTIC ENZYMES AND DNASE.LAWSON RH; HEARON SS.1977; PHYTOPATHOLOGY; U.S.A.; DA. 1977; VOL. 67; NO 10; PP. 1217-1226; BIBL. 22 REF.Article

ULTRASTRUCTURE OF CARNATION ETCHED RING VIRUS-INFECTED SAPONARIA VACCARIA AND DIANTHUS CARYOPHYLLUSLAWSON RH; HEARON SS.1974; J. ULTRASTRUCT. RES.; U.S.A.; DA. 1974; VOL. 48; NO 2; PP. 201-215; BIBL. 22 REF.Article

CHRYSANTHERUM STUNT. A VIROID DISEASEDIENNER TO; LAWSON RH.1973; VIROLOGY; U.S.A.; DA. 1973; VOL. 51; NO 1; PP. 94-101; BIBL. 27 REF.Serial Issue

PURIFICATION AND PROPERTIES OF HIBISCUS CHLOROTIC RINGSPOT VIRUSWATERWORTH HE; LAWSON RH; MONROE RL et al.1976; PHYTOPATHOLOGY; U.S.A.; DA. 1976; VOL. 66; NO 5; PP. 570-575; BIBL. 19 REF.Article

PURIFICATION AND PROPERTIES OF HIBISCUS CHLOROTIC RINGSPOT VIRUSWATERWORTH HE; LAWSON RH; MONROE RL et al.1976; PHYTOPATHOLOGY; U.S.A.; DA. 1976; VOL. 66; NO 5; PP. 570-575; BIBL. 19 REF.Article

ISOLATION AND PATHOGENICITY OF THE RATOON STUNTING DISEASE BACTERIUMGILLAPSIE AG JR; DAVIS MJ; HARRIS RW et al.1981; INT. SUGAR J.; ISSN 0020-8841; GBR; DA. 1981; VOL. 83; NO 995; PP. 324-326; ABS. FRE/GER/SPA; BIBL. 19 REF.Article

PURIFICATION AND PROPERTIES OF A VIRUS FROM EL SALVADOR THAT CAUSES MILD MOSAIC IN BEAN CULTIVARS.WATERWORTH HE; MEINERS JP; LAWSON RH et al.1977; PHYTOPATHOLOGY; U.S.A.; DA. 1977; VOL. 67; NO 2; PP. 169-173; BIBL. 11 REF.Article

IDENTIFICATION AND PARTIAL CHARACTERIZATION OF A STRAIN OF BEAN COMMON MOSAIC VIRUS FROM RHYNCHOSIA MINIMA.MEINERS JP; GILLASPIE AG JR; LAWSON RH et al.1978; PHYTOPATHOLOGY; USA; DA. 1978; VOL. 68; NO 3; PP. 283-287; BIBL. 9 REF.Article

CURLY DWARF MOSAIC DISEASE OF BEANS FROM EL SALVADOR.MEINERS JP; WATERWORTH CHE; LAWSON RH et al.1977; PHYTOPATHOLOGY; U.S.A.; DA. 1977; VOL. 67; NO 2; PP. 163-168; BIBL. 13 REF.Article

A SEED-TRANSMITTED STRAIN OF CUCUMBER MOSAIC VIRUS ISOLATED FROM BEAN.MEINERS JP; WATERWORTH HE; SMITH FF et al.1977; J. AGRIC. UNIV. PUERTO RICO; PUERTO RICO; DA. 1977; VOL. 61; NO 2; PP. 137-147; ABS. ESP.; BIBL. 13 REF.Article

TWO FLEXUOUS-ROD VIRUSES IN DIOSCOREA FLORIBUNDA: SYMPTOMS, IDENTIFICATION, AND ULTRASTRUCTUREHEARON SS; CORBETT MK; LAWSON RH et al.1978; PHYTOPATHOLOGY; USA; DA. 1978; VOL. 68; NO 8; PP. 1137-1146; BIBL. 34 REF.Article