@article{ref1,
title="How far have modern improvements in production and transportation changed the principle that men should be left free to make their own bargains?",
journal="Science",
year="1886",
author="Sumner, W. G.",
volume="7",
number="161S",
pages="221-228",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0036-8075",
doi="10.1126/science.ns-7.161S.221-a",
url="http://dx.doi.org/10.1126/science.ns-7.161S.221-a"
}