Monograph

Marsland, N., Wilson, I. M., Abeyasekera, S., Kleih, U., Lawson-McDowall, J., Burn, R. W., Golob, P., Barahona, C. E., Henderson, S., Conroy, C., Jeffries, D., Warburton, H., Oppong-Nkrumah, K. and Fredua Antoh, E. (2001) Combining quantitative and qualitative survey work. Methodological framework, practical issues, and case studies. Manual. Natural Resources Institute, Chatham, UK.