Utilization of the azolla - annabaena complex as a nitrogen fertilizer for rice
Watanabe, I.
Utilization of the azolla - annabaena complex as a nitrogen fertilizer for rice - Phillippines 1977 - 15 p. - No. 11; International Rice Res .
Utilization of the azolla - annabaena complex as a nitrogen fertilizer for rice - Phillippines 1977 - 15 p. - No. 11; International Rice Res .