- La Jolla, USA
- 17-2
- La Perouse Peninsula
- 12-21
- La Trobe University
- 2-212 11-25
- Lake Catani, Mount Buffalo
- 11-15
- Lake Coleman
- 2-159
- Lake Eildon
- 2-62
- Lake Nakuru (Kenya)
- 17-15
- Lake Okaro, New Zealand
- 17-37
- Lake Pedder
- 2-51 2-52 2-90 2-98 2-99 2-100 2-102 2-105 2-107 2-109 2-111 2-113 2-114 2-115 2-116 2-118 2-119 2-120 2-123 2-129 2-146 2-149 2-155 12-3 12-9 12-10 12-16 12-17 12-18 12-20 12-22 12-23 12-24 12-25 12-26 12-27 12-28 12-29 12-30 12-31 12-32 12-33 12-37
- Lake Tahoe, California, USA
- 17-62
- Lake Torrens, South Australia
- 2-203
- Lake Tyers, Gippsland
- 2-170 2-171 17-12
- Lake Wenatchee, Canada
- 17-57
- Lakes Entrance
- 2-54 2-97 2-136 17-12
- Lakes Entrance Fisherman's Cooperative
- 2-136
- Lambs Flat Creek, Hunter Valley
- 2-81
- Lamington National Park
- 17-49
- Land Conservation Council
- 2-136 8-9
- land degradation
- 2-57 2-66 2-68 2-91 2-190 2-198 2-207 2-209 2-215 2-218
- land use conflicts
- 14-8
- landcare
- 2-184
- Lava Bed National Park, USA
- 17-61
- Lead Products Pty Ltd
- 2-79
- Leadbeater's Possum
- 2-43 2-158 2-205
- Leaghur Forest
- 2-61
- Leetown, USA
- 17-5
- Lemonthyne forest
- 2-185 2-187 2-188 2-195
- Leonard, Prof. J. W.
- 10-1
- Levy, L.
- 2-173 2-175 2-212
- Lewis. F.
- 9-1
- Liberal and Country Party
- 8-23
- limestone mining
- 12-3 12-12 12-13 12-14 12-35
- Ling, J. K.
- 11-6
- Lions Club
- 11-31
- Lions Club, Bendigo
- 11-31
- litter
- 2-67 2-80 2-84 2-87 2-91 2-101 2-109 2-126
- Little Desert National Park
- 2-38 2-58 2-59 2-61 2-64 2-65 2-66 2-67 2-68 2-69 2-70 2-71 2-73 2-75 2-78 2-92 2-95 2-123 2-126 2-132 12-12 12-13 12-15 14-2
- lobster fishing
- 2-114
- Loch Leven, Scotland
- 17-31
- locust plague
- 2-94 2-95
- logging
- 2-55 2-114 2-119 2-122 2-123 2-136 2-153 2-155 2-160 2-162 2-163 2-167 2-168 2-170 2-171 2-172 2-173 2-176 2-182 2-183 2-184 2-185 2-186 2-187 2-189 2-190 2-191 2-197 2-203 2-206 2-210 2-211 2-212 2-213 2-214 2-215 2-216 2-217 2-218 2-219 12-37 17-19
- London, England
- 2-167 17-1 17-32
- Lord Howe Island
- 2-58
- Lorne
- 17-13
- Los Angeles, USA
- 2-221 17-2
- Louisiana, USA
- 17-18
- Lovett, R. J.
- 11-22
- Lovins, A.
- 2-213 2-214
- Lower Gordon River
- 2-157
- Lower Souris National Wildlife Reserve, Canada
- 17-8
- Loy Yang coal fields
- 2-121
- Loy Yang Power Station
- 2-132 2-139
- Lucerne, Switzerland
- 11-21 17-30
- Luther L. Carter
- 11-34
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