Book 180,363 Conference Proceeding 22,109 Government Document 19,573 Electronic 8,945 Thesis 4,759 Journal 4,139 Serial 3,990 Unknown 1,012 Kit 160 Book Chapter 97 Manuscript 74 Audio 63 Reference Material 62 Map 53 Photo 37 Article 5 Physical Object 4 Musical Score 1 Newspaper 1 see all ...

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English 160,222 German 12,358 French 9,355 Russian 7,105 Italian 2,129 Chinese 1,780 Spanish 1,779 Latin 1,221 Japanese 1,057 Dutch 647 Polish 323 Portuguese 317 Arabic 309 Undetermined 309 Indonesian 259 Danish 207 Swedish 206 Multiple 190 Hebrew 170 Czech 164 Korean 155 Romanian 142 Ukrainian 107 Hungarian 104 Norwegian 99 Ancient Greek 96 Vietnamese 91 Greek 66 Thai 66 Turkish 60 see all ...

Congresses 26,622 Conference papers and proceedings 18,932 Electronic books 16,739 Technical reports 12,392 Periodicals 5,983 History 4,229 Biography 3,742 Early works to 1800 2,495 Biographies 2,466 Observations 2,069 Tables 1,857 Early works 1,746 Dictionaries 1,399 Textbooks 1,239 Handbooks, manuals, etc 1,143 Academic theses 1,065 Bibliography 1,001 Handbooks and manuals 954 Early works to 1850 948 Popular works 940 Problems, exercises, etc 905 Statistics 884 Electronic journals 759 Thèses et écrits académiques 719 Juvenile literature 699 Tables (Data) 673 Problems and exercises 646 Festschriften 641 Charts, diagrams, etc 621 Congrès 581 see all ...

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