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- [2] A METHOD OF CONTROLLING EXPERIMENTAL ERROR FOR PERENNIAL HORTICULTURAL CROPS PROCEEDINGS OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE, 1949, 54 (DEC): : 209 - 212
- [5] The future of perennial crops AFRICAN DEVELOPMENT REVIEW-REVUE AFRICAINE DE DEVELOPPEMENT, 2002, 14 (02): : 237 - 250
- [8] SAMPLING PROBLEMS OF ENDO-PARASITIC NEMATODES OF 2 TROPICAL PERENNIAL CROPS NEMATOLOGICA, 1982, 28 (02): : 165 - 165