TY  - BOOK
AU  - Roberts D F
AU  -  Destefano G F
TI  - Genetic variation and its maintenance: With particular reference to tropitcal populations
T2  - Society for the study of human biology; 27
U1  - Y7:(G:6).192, M6 
PY  - 1986///
CY  - Cambridge
PB  - CUP         
ER  -