@book{https://authors.library.caltech.edu/records/wbz5f-8ht64,
    author = "Campbell, Ian",
    title = "Contact Metamorphism in Southern California",
    year = "1954",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20200228-095149651",
    id = "https://authors.library.caltech.edu/records/wbz5f-8ht64"
}


@book{https://authors.library.caltech.edu/records/xn7mj-4qx82,
    author = "Campbell, Ian",
    title = "Magnesium metasomatism in dolomite from Lucerne Valley, California",
    year = "1950",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20220516-204048762",
    id = "https://authors.library.caltech.edu/records/xn7mj-4qx82"
}