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Physical height is an important economic variable re ecting health and human capital. Puzzlingly, however, di erences in average height across developing countries are not well explained by di eren...
In a thousands beds general hospital affiliated to the Tehran University, long-standing infestations of insects such as cockroaches, flies, mosquitoes and rat were found as a result of vicious circles...
During 1981-83, propoxure residual spraying operations were discontinued and only extensive larviciding, using a mixture of fuel oil, gasoil or Abate larvicide, on a ten days interval basis, and sanit...

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