Seminar on Modernisation and the Environment, Pinang Pulau Pinang, Malaysia, Malayan Nature Society. Penang Branch, Consumers Association of Penang, Lim, W. C., & Ravinder Singh. (1974). Proceedings of the Seminar on Modernisation and the Environment. Consumers Association of Penang.

Seminar on Modernisation and the Environment, Pinang Pulau Pinang, Malaysia, Malayan Nature Society. Penang Branch, Consumers Association of Penang, Wah Ching Lim, and Ravinder Singh. Proceedings of the Seminar on Modernisation and the Environment. [Penang]: Consumers Association of Penang, 1974.

Seminar on Modernisation and the Environment, Pinang Pulau Pinang, Malaysia, et al. Proceedings of the Seminar on Modernisation and the Environment. Consumers Association of Penang, 1974.