.colour and life broughton,w.b.(ed.)

the biology of space travel n.w.pirie

.biology of ageing yapp,w.b.(ed.) bourne,g.h.(jt.ed.)

.biological problems arising from the control of pests and diseases wood,r.k.s.(ed.)

.the biological productivity of britain yapp,w.b.(ed.) watson,d.j.(jt.ed.)