The sustainability of whale-watching in Scotland / A. J. Woods-Ballard [et al.]
Recent advances in whale-watching research: 2012-2013 / Carol Scarpaci, E. C. Parsons
COTA(S): RE-1830
Recent advances in whale-watching research: 2014-2015 / E. C. M. Parsons, Carol Scarpaci
Recent advances in whale-watching research: 2016-2017 / E. C. Parsons and D. M. Brown