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Conserving resources /
by Ventura, Marne,
Publication:
. 24 pages :
, Includes index.
22 cm.
Availability:
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(1),
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Goods and services
by Ventura, Marne.
Publication:
. 24 pages :
, Includes index.
22 cm.
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(1),
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Needs and wants /
by Ventura, Marne,
Publication:
. 24 pages :
, Includes index.
22 cm.
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(1),
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Supply and demand /
by Ventura, Marne,
Publication:
. 24 pages :
, Includes index.
22 cm.
Availability:
Copies available:
(1),
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