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Botany for secondary schools; a guide to the knowledge of the vegetation of the neighborhood. Plants. EXOGENOUS STRUCTURE 287 ogens: Prepare thin cross- sections of the stems of meni- spermum (moonseed), one
Geranium Stem; Typical Dicot Stem; Cross Section by Go Science Crazy - Walmart.com
Pine stem cross section | Science nature, Botany, Animal cell