TY  - JOUR 
T1  - Phytosociology of the remaining xerophytic woodland associated to an environmental gradient at the banks of the São Francisco river - Petrolina, Pernambuco, Brazil
JO  - Brazilian Journal of Botany
A1  - Nascimento, Clóvis E.S.
A1  - Rodal, Maria J.N.
A1  - Cavalcanti, Antônio C.
SN  - 0100-8404
UL  - 10.1590/S0100-84042003000300001
VL  - 26 
Y1  - 2003
PB  - Brasil 
ER  -