Direct-positive photographic material and method for its product

Disulfonyl silver halide solvents substituted with piperazine at

Double exposure and double etch technique for producing precisio

Double-negative positive-working photohardenable elements

Dry film processing

Dry photographic copying method for producing Te images

Dry positive photopolymer imaging process involving heating and

Dry transfer image systems

Dry working photographic process relating to N-vinyl compound sy

Dual flow wet electrostatic precipitator

Dual flow wet electrostatic precipitator

Duplication-proof photographic film

Dye diffusion transfer employing pyridine azo dye

Dye image forming process using shifted azo dye developer