<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>27</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Chitty, D.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">The natural selection of self-regulatory behavior in animal populations</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">snowshoe hare</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1967</style></year></dates><pages><style face="normal" font="default" size="100%">51-78</style></pages><language><style face="normal" font="default" size="100%">en</style></language><notes><style face="normal" font="default" size="100%">Proc. Ecol. Soc. Aust. 2</style></notes><custom1><style face="normal" font="default" size="100%">Biology</style></custom1><custom4><style face="normal" font="default" size="100%">Science</style></custom4></record></records></xml>