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PHASES OF THE MOON
eight phases · a full cycle of 29.53 days
$1.50
THE SOLAR SYSTEM
eight planets · size, distance, year and day
Free
NUMBERS 1 TO 100
the hundred chart · primes picked out in colour
Free
MULTIPLICATION TABLE
1 to 12 · colour intensity = size of the product
Free
TONEWOODS
density, hardness, export · what is measured kept apart from what is taste
Free
THE STEREO FIELD
what stays centred · what is spread · why the low end is not panned
$2.50