By Banyard, P.J.
By Harari, P.J., Ominsky, Dave
By Cain, P.J., Hopkins, A.G.
By Berthier, Rene, Alexander, P.J.
By Hawton, Keith, Cowen, P.J.
By Anderson, Lynch, P.J.
By Dunbar, Joyce, Lynch, P.J., P. J.
By Atkinson, Lawrence V., Harley, P.J.
By O'Rourke, P. J., P.J.
By Lemstra, P.J., Kleintjens, L.A.
By Holt, P.J.
By Graedel, Thomas, Crutzen, P.J.
By Riley, Patrick A., Cunningham, P.J., Forsythe, Elizabeth, Bromham, David
By Downes, P.J., Griffith, E.A.
By Downes, P.J., Griffith, E.A., Chalaud, F.
By Robinson, P.J.
By Corfield, P.J.
By Beswick, C., Downes, P.J.
By Reay, P.J.
By Fry, P.J., Schools Council, Bainbridge, Brian W., Holt, G., Schools Council Educational Use of Living Organisms Project
By Hest, Amy, Lynch, P. J., P.J.
By R. Brocklehurst, P.J. Mawby, M. B. V. Roberts, Brocklehurst, R., Mawby, P.J., Roberts, M. B. V.
By Marsh, John S., Swanney, Pamela J., Swannery, P.J.
By Brown, P.J., Forsyth, John Bruce
By McHugh, P.J.
By Du Plessis, P.J., Bothma, N., Jordaan, Y., Van Heerden, N.