Knight, R. O. (1967). The plant in relation to water (2nd. ed.). Heinemann Educational.
Cita Chicago Style (17a ed.)Knight, R. O. The Plant in Relation to Water. 2nd. ed. London: Heinemann Educational, 1967.
Cita MLA (8a ed.)Knight, R. O. The Plant in Relation to Water. 2nd. ed. Heinemann Educational, 1967.
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