$a The structure and reproduction of the algae. Vol. 1, Introduction, Chlorophyceae, Xanthophyceae, Chrysophyceae, Bacillariophyceae, Cryptophyceae, Dinophyceae, Chloromonadineae, Euglenineae, Colourless Flagellata / by F. E. Fritsch. - Cambridge, 1948. $b (Professor of botany in the University of London, Queen Mary College)