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111
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112
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113
Environmental factors affecting fertilizer nitrogen efficiency in flooded tropical rice [microform]
Published 1979Visual Material -
114
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115
Effects of fertilization, row spacing and weed control on the yield of upland rice [microform]
Published 1979Visual Material -
116
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117
Effects of foliar sprays of urea on the growth of calamandarin seedlings [microform]
Published 1979Visual Material -
118
Response of flooded and non-flooded rice to ipil-ipil (Leucaena leucocephala (Lam) De Witt) leaves fertilization [microform]
Published 1979Visual Material -
119
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120