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- [2] SUBSTITUTION OF POTASSIUM BY SODIUM IN LETTUCE NUTRITION (LACTUCA-SATIVA L) TURRIALBA, 1978, 28 (03): : 239 - 244
- [4] THE REACTION OF LETTUCE (LACTUCA-SATIVA L) CULTIVARS TO CUCUMBER MOSAIC-VIRUS JOURNAL OF AGRICULTURAL SCIENCE, 1985, 105 (OCT): : 291 - +
- [7] GENERALIZED INFECTION OF LETTUCE (LACTUCA-SATIVA L CAPITATA AND LACTUCA-SATIVA L ROMANA) BY 2 VIRUSES DURING THE SEASON 1979 PARASITICA, 1980, 36 (02): : 58 - 62