Ryan, P. E. (1961). Role of Voluntary Health Agencies in Planning to Meet the Health Needs of Older Persons.
শিকাগো স্টাইলে সাইটেশনRyan, Philip E. Role of Voluntary Health Agencies in Planning to Meet the Health Needs of Older Persons. 1961.
এমএলএ সাইটেশনRyan, Philip E. Role of Voluntary Health Agencies in Planning to Meet the Health Needs of Older Persons. 1961.
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