Ecological survey - Review of the work, Jun 1958 - Mar 1964.

acrididae animal breeding animal population arid zones climatic zones control de insectos democratic yemen desert deserts desiertos dynamique des populations ecologia ecologie ecology economic distribution foetal death geographical distribution humid zones inde india infestation insect control iran islamic republic locusta mauritania mauritanie mort du foetus muerte fetal ova ovule pakistan pest insects population animale population density population dynamics saison seasons soudan sudan temperate zones vegetation yemen democratico zona templada zone aride zone climatique zone humide