Lucas, J.

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Lucas, J.; Duplaix-Hall, N. 1972. Census of rare animals in captivity in 1971. International Zoo Yearbook 12: 392.

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Lucas, J.; Duplaix-Hall, N. 1972. Mammals bred in captivity in 1970. International Zoo Yearbook 12: 333.

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Lucas, J. 1971. Census of rare animals in captivity in 1970. International Zoo Yearbook 11: 334-335.

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Lucas, J. 1971. Mammals bred in captivity in 1969. International Zoo Yearbook 11: 279.

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Lucas, J. 1970. Census of rare animals in captivity in 1969. International Zoo Yearbook 10: 323.

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Lucas, J. 1970. Mammals bred in captivity in 1968. International Zoo Yearbook 10: 268.

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Lucas, J. 1969. Mammals bred in captivity in 1967. International Zoo Yearbook 9: 233.

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Lucas, J. 1969. Census of rare animals in captivity in 1968. International Zoo Yearbook 9: 291.

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