| LC control no. | no2004019136 |
|---|---|
| Personal name heading | Da Costa, Helder |
| Variant(s) | Costa, Helder da |
| Found in | Agriculture--new directions for a new nation, 2003: t.p. (Helder da Costa) p. 151 (Natl. Univ. of Timor LoroSae, Dili, East Timor) |
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