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1.
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2.
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A Worm's Eye View of Flowers
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3.
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4.
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5.
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6.
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7.
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8.
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9.
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30 Activities and Observations for Exploring...
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10.
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11.
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A Guide to Camping for Kids and Their Parents
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12.
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13.
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14.
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Their Lives and Ideas, 21 Activities
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15.
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16 Fearless Activists Who Have Changed the World
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16.
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Nature Explorations with a Hand Lens
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17.
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18.
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19.
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His Life and Works, with 21 Activities
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20.
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30 Activities and Observations for Exploring...
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