L. Velasco

Efficiency of modified urea fertilizers for tropical irrigated rice

J. Flinn, K. Kaiser, C. Mamaril, 1984, Fertilizer research.

Esthetic and functional treatment of a fused permanent tooth: a case report.

E. Ferreira, L. F. Velasco, F. B. de Araújo, 1997, Quintessence international.

Response variability and optimal N-rates in irrigated rice.

J. Flinn, L. Velasco, 1987 .