https://vital.seals.ac.za/vital/access/manager/Index ${session.getAttribute("locale")} 5 An investigation into the insect ecology of citrus orchards, with special reference to citrus mussel scale (Lepidosaphes beckii newm.) https://vital.seals.ac.za/vital/access/manager/Repository/vital:5905 Wed 12 May 2021 19:31:33 SAST ]]> Studies of Hypnea spicifera https://vital.seals.ac.za/vital/access/manager/Repository/vital:4271 Thu 13 May 2021 09:48:21 SAST ]]> A critical study of methods for the determination of zinc in soils and plant materials https://vital.seals.ac.za/vital/access/manager/Repository/vital:4468 Thu 13 May 2021 06:04:39 SAST ]]> A sample survey of farming types in the divisions of Albany and Bathurst https://vital.seals.ac.za/vital/access/manager/Repository/vital:4885 Fri 23 Jun 2023 05:59:46 SAST ]]>