Toys that do Great Work
نویسندگان
چکیده
منابع مشابه
Aliphatic polyesters: great degradable polymers that cannot do everything.
Nowadays the open and the patent literatures propose a large number of polymers whose main chains can be degraded usefully. Among these degradable polymers, aliphatic polyester-based polymeric structures are receiving special attention because they are all more or less sensitive to hydrolytic degradation, a feature of interest when compared with the fact that living systems function in aqueous ...
متن کاملWork in Great Britain
Up to the present in this country there has not been a great deal of systematized work done along the lines of child guidance. On the medical side much attention has been paid to the problem of mental deficiency, but with this child guidance has little or nothing to do, except in so far as it may be necessary to recognize the mental defective who comes to the clinic and transfer him to the care...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1920
ISSN: 0036-8733
DOI: 10.1038/scientificamerican07101920-38