teacher-student ratio

antiskid control box channel mould chost cobaltlotharmeyerite electric convection get rocks in one's head heat stress home-work hruba lock valve Naemorhedus goral new tuberculin old price order rajiformess pachalic reflection interaction semigroud stiff-upper-lips ultimate bending moment Vākhān Selseleh-ye Kūh-e (Vakhanskiy Khr.)