By Jacobs, B., Hjalmarsson, H., Basbanes, Nicholas A.
By Mann, A., Rich, H.
By Twist, H.
By Vogt, W., Nagel, D., Sator, H.
By Sims, Lesley, Edon, H.
By Baxandall, Peter, Liebeck, H.
By M. M. Brem, Bremmer, H.
By Beck, A. H. W., Ahmed, H.
By Belcher, H., Swale, E., Culture Collection of Algae and Protozoa
By Rybakov, Anatolii, Shukman, H.
By Ross, Prof. Alistair, Fulford, J, Hutchings, Merryn, Schmitz, H., Bottomley, Jane
By Myint, H.
By Miller, Alice, Hannum, H.
By Zola, Émile, Ellis, H.
By Eggers, Reinhold, Gee, H.
By Wylie, William Derek, Churchill-Davidson, H.C., H.
By Cicero, Sutton, E. W., Rackham, H.
By Hoover, H.
By Thompson, Flora, Massingham, H.
By Crossley-Holland, Kevin, Firmin, H.
By Blamires, H.
By Faridi, H., Faubion, J.M.
By Wells-Furby, H.
By Mejier, H., Meijer, Hugo
By Louf, Andre, Hoskyns, H.
By Weis, E., Mattutat, H.
By Robinson, H., Bamford, C.G.
By Takahashi, K., Arakawa, H.
By van der Pas, H., van Herendael, B., Keith, L.G.