Details of "portable" greenhouse showing construction of wood and polyfilm, "meccano" set bench frames and oil space heater. Greenhouses.

Detail of seeding machine at Rochester nursery.

Detail of seeding drum used for containers.

Detail of roof of shade house to show vent for hot air.

Detail of machine for fertilizer placement.

Detail of irrigation equipment. Fir douglas, 1+0, container equipment. Weyerhauser.

Detail of hot air heating underneath benches at Jefferson nursery. Greenhouse. Weyerhauser.

Researcher on duty observing satellite taken images

Research on duty doing manual identification of image elements

Manual delimitation of image elements