TY  - SER
AU  - Pitman, R. L., Jehl, J. R.
TI  - Geographic variation and reassessment of species limits in the ?masked? boobies of the eastern Pacific ocean.  
U1  - 598.43598.43 
PY  - 1998///
KW  - Geographic variation and reassessment of species limits in the ?masked? boobies of the eastern Pacific ocean.
ER  -