TY  - BOOK
AU  - Hall, Brian Keith
AU  - Hallgrímsson, Benedikt
TI  - Variation
SN  - 9780120887774
SN  - 200504733
U1  - 576.54 HAL 
PY  - 2005///
CY  - Amsterdam ; Boston
PB  - Elsevier / Academic Press
KW  - Variation (Biology)
N1  - Includes bibliographical references and index
ER  -