I would like to get an article by Janssen, C.R. 1960 entitled “The influence of temperature on geotaxis and phototaxis in LIttorina obtusata
The article that you require appears in the journal, Archives Néerlandaises de Zoologie. Rhodes University SAIAB library only has: v. 42(2-3), 1992; v. 47, 1997- of the journal. However, it is possible for Staff and Post Graduate students to may make use of our Interlibrary Loan facility or contact our ILL Librarian Ms Rina Goosen at R.Goosen@ru.ac.za.
The other options for obtaining the article are: