@article{ref1,
title="Trends in agricultural aviation. Ultra-low-volume spraying",
journal="Chemistry and industry",
year="1968",
author="Lindley, C. D.",
volume="4",
number="",
pages="114-117",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0009-3068",
doi="",
url="http://dx.doi.org/"
}