Smallest fundamental unit of an element or a compound is called a molecule. The rapid progress and multi-faced development of Science, in general; and of Biology, in particular, has ushered in an absolutely new era in history of mankind, regarding the physio-chemical department of life.

The emergence of molecular Biology, as a Branch of science for study, could also be possible by virtue of the very present of the past.

The discipline is very vast and with the passage of time, big breakthroughs are in the offing. Feeling the pulse of the time, it deemed suitable, rather, necessary to bring out a comprehensive and compact encyclopaedia on this subject in order to cater to the maximum requirements of this subject in order to cater to the maximum requirements of the lovers of Molecular biology.

Comprising five volumes, this trivial attempt is expected to prove to be an asset for Science elite and students alike. Now, savour it molecule-by-molecule.

Animal behaviour is, obviously, the way in which animals—non human-lead their life, such as, feeding, migration to different parts in different seasons, sexual life, gregariousness etc.

Different factors need to be studied to have right knowledge about animal behaviour. One of them is the concept of “Natural Selection” propounded by Darwin. He observes that species complete with each other for survival.

Apart from animals, there also occurs a peaceful contest among birds. For example, the severest rivalry between the males of many species to attract their female counterpart is one of the patterns of animal behaviour. It also includes a genetic component similar to the morphological and psychological traits.

The present multi-volume encyclopaedia is a painstaking research work on animals behaviour. It would certainly prove to be an asset for psychologists and those who seed thorough knowledge on the subject.

This book introduces the general reader and the specialist to the study and analysis of cellular structure and function. This book reflects in part the recent resurgence of interest in the study of cell. Emphasis in the present volume is placed upon the structures present in the cell and their functions. The progressive communication of cellular function to finer and finer levels of organization has destroyed many of our older concepts as to how various areas of cellular functions are related. This volume studies cell in latest technical development context. The following are the contents of the book. Cell Biology—An Introduction; General Structure of Cell; Methods of Studying Cell; components of Cell; The Cell Membranes; Microtubules and Microfilaments; enzymes; Cell Respiration; Mitochondria; Golgi Complex; The Endoplasmic Reticulum; Chloroplast; Lysosomes and Peroxisomes; Nucleus and Chromosomes; DNA Replication; Mitosis; Meiosis; Heredity; Cytogenetices; Genetic Code; Transcription; Gene Regulation; Differentiation of Cell; etc.
Profusely illustrated, this will prove a reliable text-cum-reference book to all concerned.

Reptiles are the first vertebrate adapted for life in dry places on land. Some live near water or in water, but for the breeding purpose and egg laying they return to land. About 275 million years ago, in the early Carboniferous Period primitive amphibians were produced and from them recent amphibians and fully terrestrial animals evolved. The terrestrial stock gave rise to reptiles, birds and mammals (amniotes). Amniotes are those animals whose embryos are enclosed by a fluid-filled sac called amnion.

Reptilia include 7000 species of lizards, snakes, tortoises, alligators, crocodiles and tuatara.

In the present work the very scientific information based on the latest researches is organized in three volumes. Profusely illustrated the authoritative information contained in this work will prove of utmost use to the students, teachers and researchers.