The silviculture of gregarious types - the philippine pine forests.

biologia biologie biology bois bosques botanical composition chemicophysical properties classement clima climat climate composition botanique crecimiento croissance damage ecologia ecological succession ecologie ecology ensemencement forest land forest protection forests grading growth madera mejoramiento del rodal pinus recherche rendement rendimiento research siembra silvicultura silviculture soil sol sowing stand improvement suelo sylviculture terrain forestier tierras forestales topografia topographie topography volume volumen wood yields