TY  - BOOK
AU  - Hoggren, Mats.
AU  - ill.
TI  - Mating strategies and sperm competition in the Adder (Vipera berus)
SN  - 9155436307
AV  - PAM QA76.76.H63 No.163 
CY  - Uppsala
KW  - Science and technology
N1  - Includes bibliographical references
ER  -