Kalas, Klaus books & textbook
The Year of the Greylag Goose
Konrad Lorenz Sybille Kalas Klaus Kalas
Harcourt Brace Jovanovich /1979T Hardcover / 199 Pages
isbn-10: 0151997373 / isbn-13: 9780151997374
The Beaver Family Book (Animal Family (Chronicle))
NorthSouth /1999-08-01 Paperback / 56 Pages
isbn-10: 073581211X / isbn-13: 9780735812116
