4
80,000,
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1
L
OF SCIENCES
(Ati NAL ACA LEMY
nt
DEC.
FIGURE 5
—
a39
#42
—-v
JAN
1957
JAN.
1957
a?
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3
a30
FEB.
026
los}
FEB.
MAR.
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58
eqs
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APR.
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18
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827
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MAY
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JUNE
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JUNE
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42
8%
MAY
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SEPT.
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AUG.
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T
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el
=24
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264
123
1
1956
DEC.
a
40,000
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60,000+
70,000 |
+
FIGURE 4
NOV.
1956
NOV.
a3
Iar
035
$3
+
FEET
100,000
40,000
50,0007
60,000+
70,0004
S000
90,0007
FEET
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+
rt
1956
JAN.
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le
1958
JAN.
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ler
+
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MAY
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JUNE
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>
4
4
ad 2
YS
4
SOLLEC TONS
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