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- [1] CALORIFIC VALUE OF THE DRY-MATTER AND ON THE EFFICIENCY COEFFICIENT OF PAR IN SUNFLOWER AND MAIZE PLANTS DOKLADI NA BOLGARSKATA AKADEMIYA NA NAUKITE, 1979, 32 (11): : 1547 - 1550
- [4] DRY-MATTER PRODUCTION AND N CONTENT OF WHEAT PLANTS IN RESPONSE TO APPLICATIONS OF NITROHUMIC ACIDS AGROCHIMICA, 1995, 39 (2-3): : 73 - 77
- [5] EFFECT OF MANURING AND DIFFERENT NITROGENOUS FERTILIZERS ON THE DRY-MATTER AND NITROGEN-CONTENT AND FORMS IN HORSE BEAN AND BARLEY PLANTS BEITRAGE ZUR TROPISCHEN LANDWIRTSCHAFT UND VETERINARMEDIZIN, 1979, 17 (03): : 275 - 281