书名原文Heat pipe theory and practice Heat pipe theory and practice 书名原文Wheat breedeng theory and practice 书名原文The state in theory and practice 书名原文Surveyingtheory and practice 书名原文Emulsionstheory and practice Narrative theory and practice 书名原文Fibre optics;Theory and practice 书名原文Photograghy theory and practice6. Information service theory practice