TY  - BOOK
AU  - Foster, Steven.
TI  - Echinacea: the purple coneflowers
T2  - American Botanical Council. Botanical series
PY  - 1991///
CY  - Austin, TX.
PB  - American Botanical Council
KW  - Achillea Millefolium
KW  - Botánica médica
KW  - Echinacea
ER  -