by I.H. Burkill, M.A., F.L.S., with contributions by William Birtwistle [and three others].Published on behalf of the governments of the Straits settlements and Federated Malay states by the Crown agents for the colonies1935.<Y995-B4443>
by I.H. Burkill ; with contributions by William Birtwistle ... [et al.]Published on behalf of the Governments of Malaysia and Singapore by the Ministry of Agriculture and Co-operatives1966