On the struggle for existance during the Spring and Autumn Period and its historical function;

The existing and regeneration situations of Dugesia japonica are tested by different concentration of pH solution made of running water and deionized water.

This thesis, by way of analysis construction of middle and small travel agency, announce the superiority and inferior position of them when they compete with large travel agency in China, give the method of them to exist and develop.

Research on survival period of patients had γ-knife radiotherapy after self-expandable metal stents under endoscope for esophageal carcinoma;

Study on the Chinicopathologic Factors after Operation for the Survival of Mucoepidermoid Carcinoma in Salivary Glands;

The Survival Function Analysis of Anorectal Malignant Melanoma;

The non - listing parts should activate bad assets,integrate and optimize the auxiliary assets to create opportunities for them to survive.

How can the adult education survive and develop in the sitnetion of enlargement of colleges is a very difficult problem.

Why the business firm would like to undertake the corporate environmental responsibility (CER) beyond the legal obligation and how they survive in the real world constitute the survival paradox of corporate citizenship in the market economy.

On ecological position of sci-tech periodicals and their existence in differentiation;

Network Society-The Idea Vtopia of Man Existence;

Walking out from the Technology Reason of Existence Predicament;

Response of grasshoppers subsistence and breeding to climatic change in Inner Mongolia;

Subsistence and Social Security for Peasart-worders;

Discussion on the sustainable development of cities from the view of human subsistence;