 | PREFACE (A.F. Posnette, Dr. H.C. Pereira) |
| TETRACYCLINE THERAPY OF PEAR DECLINE AND X-DISEASE IN PEACH AND CHERRY (G. Nyland) |
| THE INFLUENCE OF OXYTETRACYCLINE ON THE APPEARANCE OF APPLE PROLIFERATION SYMPTOMS (B. Zawadzka, M. Kaminska) |
| THE EFFECT OF BENOMYL ON THE SYMPTOMS OF APPLE PROLIFERATION (L. Kunze, A. Schmidle) |
| UNILATERAL CROSS PROTECTION AMONG SOME NEPO VIRUSES (R.W. Fulton) |
| CHERRY LEAF ROLL VIRUS IN SAMBUCUS EBULUS L. (D. Mamula, D. Milicic) |
| LOCALISATION OF CHERRY LEAF ROLL VIRUS IN PRUNUS AVIUM X P. PSEUDOCERASUS ROOTSTOCKS (R. Cropley, L. Giunchedi, H.R. Cameron) |
| MERISTEM CULTURE FOR THE PRODUCTION OF VIRUS-FREE PRUNUS (Ph. Boxus) |
| INVESTIGATIONS ON THE ETIOLOGY OF CHERRY DECLINE IN THE GERMAN DEMOCRATIC REPUBLIC AND THE MOLDAVIAN SOCIALIST SOVIET REPUBLIC (H. Kegler, T.D. Verderevskaja, H. Kleinhempel, H.M. Müller) |
| DIFFERENCES BETWEEN TWISTED LEAF AND TOMATO BUSHY STUNT VIRUS IN SWEET CHERRY (A.J. Hansen) |
| A LEAF MOSAIC IN THE RUSSIAN APPLE CLONE R 12 740-7A CONNECTED WITH A STRAIN OF CHERRY NECROTIC RINGSPOT VIRUS (G. Naumann) |
| A MEMBER OF THE APPLE MOSAIC VIRUS GROUP OCCURRING IN RUBUS (R.H. Converse, R. Casper) |
| DUAL INFECTION OF ROUNDEL CHERRY WITH RING MOTTLE AND EUROPEAN RUSTY MOTTLE VIRUSES (S. Ramaswamy) |
| IMPROVED PERFORMANCE OF PEACH TREE CLONE FREED FROM RING SPOT BY THERMOTHERAPY. STUDY OF RECONTAMINATION IN THE ORCHARD (R. Bernhard, R. Saunier, C. Marenaud) |
| BARK SPLIT DISEASE OF PRUNE TREES AND ITS ASSOCIATION WITH STRAINS OF APPLE CHLOROTIC LEAF SPOT (J. Dunez, C. Marenaud, R. Delbos) |
| VEGETATIVE DISORDERS IN THE JAPANESE PLUM TREES ON MYROBALAN ROOTSTOCK IN THE PROVINCE OF VALENCIA (SPAIN) (J.A. Sánchez-Capuchino, J.B. Forner) |
| ANOMALIES IN THE BEHAVIOUR OF CERTAIN PEACH AND APRICOT VARIETIES GRAFTED ON DIFFERENT TYPES OF PLUM ROOTSTOCKS AND THEIR POSSIBLE RELATIONSHIP WITH THE CHLOROTIC LEAF SPOT VIRUS (G. Llacer, R. Cambra) |
| SPREAD AND CONTROL OF PRUNUS STEM PITTING (R.F. Stouffer, D.M. Soulen, S.H. Smith) |
| EVIDENCE OF A VIRUS DISEASE CAUSING DEFORMED STONES ON THE PEACH SEEDLING GF 305 (J.C. Desvignes, A. Savio) |
| CROP REDUCTION IN PEAR TREES CAUSED BY VIRUS INFECTION (A. Thomsen) |
| TRANSMISSIBLE AND NON TRANSMISSIBLE FRUIT DEFORMATION OF QUINCE (Z. Fleisher, Sh. Pappo, Z. Arnstein) |
| UN DEPERISSEMENT DU POIRIER OBSERVE EN FRANCE SIMILAIRE AU "PEAR DECLINE" OU "MORIA" (J. Lemoine) |
| CYDONIA C 7-1 AND PYRONIA VEITCHII TWO COMPLEMENTARY INDICATORS (J.C. Desvignes, A. Savio) |
| STUDY OF SHARKA SPREAD PATTERN IN SOME PLUM ORCHARDS (M.M. Jordovic) |
| FURTHER STUDIES ABOUT THE HOST RANGE OF SHARKA (PLUM POX) VIRUS (G. Hamdorf) |
| SUSCEPTIBILITY OF PLUM VARIETIES TO PLUM POX DISEASE (D. Trifonov) |
| PROTECTION WITH SOME STRAINS OF SARKA VIRUS (D. Sutic) |
| SERODIAGNOSIS OF PLUM POX VIRUS (R. Casper) |
| ESSAI D'ORGANISATION DE LA LUTTE CONTRE LA SHARKA EN COLLABORATION INTERNATIONALE (J. Souty) |
| NEW EVIDENCES OF THE HIGH SENSITIVITY OF MALUS DAWSONIANA TO APPLE PROLIFERATION DISEASE AND OF ITS VALUE FOR TESTING APPLE TREES (G. Morvan, C. Castelain) |
| PROLONGED OBSERVATIONS ON SPREAD AND BEHAVIOUR OF PROLIFERATION DISEASE IN APPLE ORCHARDS (G. Schmid) |
| APPLE PROLIFERATION DISEASE IN SPAIN: GRAFT TRANSMISSION AND DETECTION OF MYCOPLASMA AND RICKETTSIA PLASMA-LIKE ORGANISMS IN INFECTED TISSUE (A. Peña-Iglesias) |
| POSSIBLE RELATIONSHIPS AMONG POME FRUIT VIRUSES DETECTED IN GRAFT TRANSMISSION TRIALS (E. Refatti, R. Osler) |
| GROWTH, YIELD, AND FRUIT QUALITY OF VIRUS-INFECTED AND VIRUS-FREE GOLDEN DELICIOUS APPLE TREES (C.A.R. Meijneke, H.J. van Oosten, H. Peerboom) |
| PLANT SPECIES OUTSIDE THE GENUS MALUS AS INDICATORS FOR LATENT VIRUSES OF APPLE (F.A. van der Meer) |
| VIRUSES CAUSING APPLE TOPWORKING DISEASE (TAKA TSUGI BYO) IN JAPAN (H. Yanase, K. Sawamura, G.I. Mink, A. Yamaguchi) |
| APPLE LATENT VIRUSES: TRANSMISSION FROM HERBACEOUS HOST TISSUE TO MALUS INDICATOR PLANTS AND DISTRIBUTION IN APPLE BUDWOOD (J.K. Uyemoto, R.F. Stouffer, R.M. Gilmer) |
| GROWTH RESPONSE TO LATENT VIRUS INFECTION OF APPLE TREES ON SEEDLING ROOTSTOCKS (K.D. Hickey, G.M. Shear) |
| SYMPTOMS OF STAR CRACK VIRUS ON THE FRUIT AND SHOOT GROWTH OF APPLE CULTIVARS (A.I. Campbell, L.F. Hughes) |
| STEM WITCHES' BROOM OF FRUITS AND FOREST TREES (D. Atanasoff) |
| PRELIMINARY IDENTIFICATION OF THE VIRUSES PRODUCING SPANISH APRICOT PSEUDOPOX (VIRUELA) AND APRICOT MOSAIC DISEASES (A. Pena-Iglesias, P. Ayuso Gonzalez) |
