<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">Hallotypes</topic></authority><related type="other"><topic>Hallotype</topic></related><related type="broader"><topic>photographs by processing or presentation technique</topic></related><variant type="other"><topic>Hallotype</topic></variant> <note xml:lang="en"><![CDATA[ Color stereographic photographs made by using two similar prints, one treated with dammar varnish to make it transparent, the other painted with washes of color; the former is laid over the latter and the two bound together with a glass and backing, achieving a three-dimensional effect. ]]></note></mads>