منابع مشابه
Biology and control of reproduction of sturgeons in fish farm
Over the last century the reproduction of sturgeon has been intensively studied par Russian scientists who established a technology for the ranching of alevins which included artificial fertilization of gametes taken from wild broodfish and larvae rearing. More recently, since 1970, major contributions originated from teams in the USA, the EU, Japan and Iran. A rather good knowledge of the repr...
متن کاملBiology and control of reproduction of sturgeons in fish farm
Over the last century the reproduction of sturgeon has been intensively studied par Russian scientists who established a technology for the ranching of alevins which included artificial fertilization of gametes taken from wild broodfish and larvae rearing. More recently, since 1970, major contributions originated from teams in the USA, the EU, Japan and Iran. A rather good knowledge of the repr...
متن کاملSocial Biology and Welfare
family life in different types of community. Chapters 10 and 11 give an account of the development of social work in the colonial empire, and include discussion of some current problems of social hygiene. The final portion of the book consists of a useful handbook on 25 social problems, including trends of population, illegitimacy, care of children, old people, mental health, prostitution, writ...
متن کاملCorporate Social Performance and Internal Control
This study examines the relationship between corporate social performance and the Company's internal control. For the study, the definition of corporate social performance is used Wood (Wood, 1991) and social performance into the process (internal processes, management) and outcome (social impact) is divided. To assess the social performance of corporate social performance version of the questi...
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ژورنال
عنوان ژورنال: Nature
سال: 1924
ISSN: 0028-0836,1476-4687
DOI: 10.1038/113773a0