What do the US West Coast public libraries post on Twitter?

Amir Karami, Matthew Collins. What do the US West Coast public libraries post on Twitter?. In Building & Sustaining an Ethical Future with Emerging Technology - Proceedings of the 81st ASIS&T Annual Meeting, ASIST 2018, Vancouver, BC, Canada, November 10-14, 2018. Volume 55 of Proc. Assoc. Inf. Sci. Technol., pages 216-225, Wiley, 2018. [doi]

@inproceedings{KaramiC18-0,
  title = {What do the US West Coast public libraries post on Twitter?},
  author = {Amir Karami and Matthew Collins},
  year = {2018},
  doi = {10.1002/pra2.2018.14505501024},
  url = {https://doi.org/10.1002/pra2.2018.14505501024},
  researchr = {https://researchr.org/publication/KaramiC18-0},
  cites = {0},
  citedby = {0},
  pages = {216-225},
  booktitle = {Building & Sustaining an Ethical Future with Emerging Technology - Proceedings of the 81st ASIS&T Annual Meeting, ASIST 2018, Vancouver, BC, Canada, November 10-14, 2018},
  volume = {55},
  number = {1},
  series = {Proc. Assoc. Inf. Sci. Technol.},
  publisher = {Wiley},
}