TY  - BOOK
AU  - Bell,C.Ritchie
TI  - Plant variation and classification
AV  - QK97 B44 1967
PY  - 1967///]
CY  - Belmont, Calif.
PB  - Wadsworth Pub. Co.
KW  - Botany
KW  - Classification
KW  - plants
KW  - Variation
N1  - Includes bibliographical references (p. 121-125)
ER  -