TY - GEN AU - Jackson,B.P.,Snowdon,D.W. TI - Powdered vegetable drugs: an atlas of microscopy for use in the identification and authentication of some plant materials and employed as medicinal agents PY - 1974/// CY - London PB - Standley Thornes KW - Medicinal Plants KW - Powdered Vegetable Drugs KW - Microscopy ER -