- Lachensee (Europe), photographs
- 17-13
- Ladell, W.S.S. (Chemical Defence Experimental Establishment)
- 16-2
- Lady Julia Percy Island
- 6-5
- Lady Yetive, photographs
- 18-31
- Laeter, John R. de (Western Australian Institute of Technology)
- 6-10
- LaFeber, David
- 15-46
- Lajoux, Jean-Dominique
- 16-32
- Lake Albacutya (Victoria), photographs
- 18-8
- Lake Boga (Victoria)
- 2-1 18-8
- Lake Brienz (Switzerland), photographs
- 20-13
- Lake Bullenmerri (Victoria), photographs
- 18-7
- Lake Coorong (Victoria), photographs
- 18-8
- Lake Corangamite (Victoria), photographs
- 18-7
- Lake Hindmarsh (Victoria), photographs
- 18-8
- Lake Keilambete, photograph
- 13-10
- Lake Lucerne (Switzerland), photographs
- 20-11
- Lake Margaret (Tasmania), photographs
- 18-27
- Lake Mountain (Victoria)
- 11-3
- Lake Tyers (Victoria), photographs
- 18-9
- Lake Tyrell (Victoria), photographs
- 17-11 18-8
- Lake Woods (NT)
- 6-23 23-34
- Lakes
- 4-9 9-11 13-10 18-8 18-9
- Lakes Oil Ltd
- 9-11
- Lakey, Richard (International Association of Hydrogeologists)
- 1-2 6-14
- Lalor, J.H. (Western Mining Corporation)
- 15-47
- Lamb, H.H.
- 8-44
- LaNauze, John (Australian National University)
- 1-21
- Landforms, photographs
- 8-24 8-33 19-3 23-27 23-32
- Landis, C.A. (Otago University)
- 15-32
- Lands Department
- 23-9
- Land's End (UK)
- 8-49 20-38
- Landslides, photographs
- 8-55 18-22
- Lane, R.B., photograph
- 17-10
- Langham, Beryl (University of Melbourne), photograph
- 17-21
- Large, D.M. (Australian Academy of Science)
- 7-22
- Latif, M.A. (University of Dacca)
- 10-28
- Latrobe Library
- 18-3
- LaTrobe University
- 1-51 1-52
- Latrobe Valley (Victoria)
- 9-15
- Laurenson, E.M. (University of NSW)
- 7-22
- Lausanne, University of
- 14-4
- Lava, photographs
- 8-43 15-54 15-55 18-7 18-28 19-23 23-18
- Law, P.G.
- 1-21
- Lawrence, C.R. (Geological Survey of Victoria)
- 8-32 8-39 14-11 16-18
- Le Bas, M.J. (Leicester University)
- 15-51
- Leamy, M.L. (Department of Scientific and Industrial Research, New Zealand) Lebanon, photographs
- 13-4
- LeBlanc, Richard
- 16-20
- Lee, Douglas H.K. (US Occupational Health and Training Facility)
- 16-17
- Lees, G.M. (Anglo-Iranian Oil Co.)
- 15-42
- Legacy Club
- 5-4
- Legget, Robert F. (University of Toronto)
- 6-1
- Lehmann, Walther M.
- 7-4
- Leiden (Netherlands), photographs
- 20-10
- Leigh Creek (SA), photographs
- 1-22 18-26
- Leighiscus hillsi
- 1-22
- Leningrad (USSR), photographs
- 20-27
- Leningrad University, photographs
- 20-27
- Lensen, G.J. (New Zealand Geological Survey)
- 15-32
- Leonard, John (International Association of Hydrogeologists)
- 6-14
- Leopold, Luna (University of California; Unesco)
- 13-4 17-27
- Lewis, Keith B. (Department of Scientific and Industrial Research, N.Z.) Liechtenstein, photographs
- 15-7
- Liestal (Switzerland), photographs
- 20-11
- Lilley, F.E.M. (Australian National University)
- 7-25
- Lim Kee-giap (Unesco Science Cooperation Office, Djakarta)
- 10-20
- Lima (Peru), photographs 1
- 1-50 2-1 7-35 8-44 10-16 10-31 15-39 20-33
- Limestone
- 9-14 18-4 18-11 18-36
- Lindstrom, Maurits (Lund University)
- 14-10
- Lineaments
- 6-18 7-25 7-26 8-25 8-26 8-30 8-34 8-41 8-51 15-34 23-8 23-21 23-23 23-26 23-30 23-31 23-32 23-36
- Liquid crystals
- 8-27
- Lithological logs
- 8-37
- Little Desert (Victoria), photographs
- 18-8
- Liu Shao-chi
- 10-5
- Liu Tung-sheng (Academia Sinica)
- 1-24 6-16
- Load-casts
- 2-2
- Lobstein, Lyonel (Scotch College, WA)
- 6-1
- Locust swarm (photograph)
- 16-3
- Loder, J.
- 16-26
- Loewe, Fritz (University of Melbourne)
- 7-21 8-18 13-18 18-36
- London Bridge (Victoria), negatives
- 19-23
- London Geologists' Association
- 7-41
- London, University of
- 11-1 16-25
- Long Reef (NSW), photographs
- 18-24
- Longman, Heber A. (Queensland Museum)
- 7-11
- Lorne (Victoria), photographs
- 18-3 18-6 18-13 18-14
- Loupekine
- 6-10
- Lovering, J.F. (Geological Society of Australia)
- 1-47
- Lowe, Sir Charles (University of Melbourne), photographs
- 17-23
- Lubbock, Texas (U.S.A.)
- 1-2 4-33 19-20
- Lucerne (Europe), photographs
- 17-13 20-11
- Ludbrook, N.H. (SA Department of Mines; Geological Society of Australia)
- 6-10 12-12
- Ludlow Castle (UK), photographs
- 20-9
- Lunettes
- 4-10 8-28 9-8 18-8 19-20
- Lyons, Neil (University of Melbourne), photograph
- 17-21
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