Category:පරිසරවේදය
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සොයුරු ව්යාපෘති: විකිපීඩියා ලිපිය, Commons category, quotes, definition, textbook, course, විකිදත්ත අයිතමය.
This category is for works concerned with ecology which would usually be included in Library of Congress subclass QH540-549.5