Shrock, Robert R. .
Principles of invertebrate paleontology / by Robert R. shrock and William H. Twenhofel. - 2nd ed / - Delhi : CBS Publishers & Dishtributors , 1987 - 816p ;
Zoology
H6(K1) / M7;5
Principles of invertebrate paleontology / by Robert R. shrock and William H. Twenhofel. - 2nd ed / - Delhi : CBS Publishers & Dishtributors , 1987 - 816p ;
Zoology
H6(K1) / M7;5