TY  - BOOK
AU  - Briggs, D
AU  - Walters, S.M.
TI  - Plant Variation  and Evolution
U1  - 581.38 21st ed
PY  - 1969///
CY  - USA
PB  - World University Library
KW  - ray and the definition of species
KW  - phenotype and genotype
KW  - Variation and evolution
KW  - gamodemes their variation and breeding
N1  - World University Library
ER  -