The lodging contract,the hotel agent holds the obligation of offer and attached duty.

Traced to German Case Law,the theory of collateral obligation comes to develop with the establishment of good faith principle.

The set of self-service deposit in supermarkets is not based on the collateral obligation of contract of sale,but the contract between consumers and supermarkets.

In order to improve the market,law stipulates the party with more imformation the collateral obligation.

Based on the actual conditions of our college library , this paper discusses how to purchase,catalogue and manage the CD attached to books.

Indexing Processing and Management of Accessories of Books;

This paper introduces the types of CD attached with periodicals and their acceptance and description methods, and advances some methods for the management and utilization of CD attached with periodicals.

This paper introduces the types of CD attached with books, analyzes on the present management situation of CD attached with books, and probes into how to strengthen the management of CD attached with books.

This paper analyzes on the features of current CD attached with books, sums up several management modes of CD attached with books, and probes into the paths of making better use of the CD attached with books.

This paper discusses on the types,description methods and management modes of the literatures of CD attached with books,introduces the situation of description and management of CD attached with books in library connecting with the practices.