The modes of formation of subjects that have been recognised are.
1. Lamination
According. to Ranganathan “when the basic layer is a basic subject and the other layers are isolate ideas, a compound subject is formed”.
Example
Kind 1: Anatomy of the human body. Kind 2: Ayurvedic system of medicine,
2. Loose Assemblage
Loose assemblage is assembling together of two or more of:
a) subjects (basic or compound)
b) isolate ideas (in one and the same facet, or isolate ideas in one and the same array)
Example
Kind 1 Statistics for librarians. Kind 2 Influence of Buddhism on Christianity. Kind 3 Medicine – Ayurvedic system – tropical environment child.
3. Fission
Example –Natural sciences, useful arts, humanities, social sciences,
4. Fusion
Example- Biochemistry, astrophysics.
5. Distillation
Example- management, anesthesiology
6. Clustering
Example- area study, Gandhiana, soil sciences.
6. Agglomeration
Example – psychology and sociology
