@article{Frost2017, author = "Warwick Frost", title = "{Nature-based tourism in the 1920s and 1930s}", year = "2017", month = "6", url = "https://bridges.monash.edu/articles/journal_contribution/Nature-based_tourism_in_the_1920s_and_1930s/5091457", doi = "10.4225/03/5938ee7eee1ff" }