Which is better CR-39 or polycarbonate? Polycarbonate lenses have a higher index of refraction (1.586) than CR-39 plastic (1.498) and are therefore thinner in an
¿Cuánto crecio el río Paraná hoy? Alturas hidrométricas de la cuenca del Paraná Puerto Río Alerta Paraná Paraná 4,70 Santa Fe Paraná 5,30 Diamante Paraná
Why was the anti nuclear movement significant? The antinuclear movement reemerged as a major social movement after the energy crisis of the early 1970s. The
What causes twin discordance? The causes of twin growth discordance are often unknown. The most important is considered to be monochorionicity, mainly because of unequal