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| 005 | 20151229151254.0 | ||
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| 008 | 046/4s21972 pn ||||g| | 00| ||spa d | ||
| 035 | |a 090679 | ||
| 040 | |a Sistema de Bibliotecas de la Universidad de Panamá | ||
| 082 | 0 | 4 | |a T 428.246 |b Os2 |
| 100 | 1 | |a Oses O., Ruth del Carmen |9 174762 | |
| 245 | 1 | 0 | |a A comparative study of first language and second language learning and its application to the teaching of the englisg as a foreign language in Panama schools |c / Ruth del Carmen Oses O. |
| 260 | |a Panamá : |b Universidad, |c 1972 | ||
| 300 | |a 141 p. : |b ilus. ; |c 28 cm. | ||
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