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	1.	No cover image available Ecology and field biology / Robert smith. by Smith, Robert Leo Material type: Text; Format: print ; Literary form: Not fiction Publication details: New York : Harper & Row, c1990 Availability: Items available for loan: Aklatang Emilio Aguinaldo-Information Resource Center (3)Call number: QH 541 .Sm64 1990, ... Place hold Add to cart (remove)
	2.	No cover image available Elements of ecology. / Robert Leo Smith, Thomas M. Smith. by Smith, Robert Leo Smith, Thomas Michael Material type: Text; Format: print ; Literary form: Not fiction Publication details: Menlo Park, Calif. : Benjamine/Cummings Pub., c1998 Availability: Items available for loan: Aklatang Emilio Aguinaldo-Information Resource Center (1)Call number: QH 541 .Sm64e 1998. Place hold Add to cart (remove)
	3.	Elements of ecology / Robert Leo Smith, Thomas M. Smith. by Smith, Robert Leo Smith, Thomas Michael Material type: Text; Format: print ; Literary form: Not fiction Publication details: Singapore : Pearson Education (Asia), c2004 Availability: Items available for loan: Aklatang Emilio Aguinaldo-Information Resource Center (5)Call number: QH 541 .Sm64e 2004, ... Place hold Add to cart (remove)
	4.	Elements of ecology / Thomas M. Smith, Robert Leo Smith. by Smith, T. M, -1955 Smith, Robert Leo Material type: Text; Format: print ; Literary form: Not fiction Publication details: San Francisco : Pearson Benjamin Cummings, c2012 Availability: Items available for loan: Aklatang Emilio Aguinaldo-Information Resource Center (1)Call number: QH 541 .Sm511 2012. Place hold Add to cart (remove)