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การท ากรงของนกกรงหัวจุก : บ้านท่าแรด                                                                    ๒๘


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                                                        เรื่องที่ ๒

                                    โครงสร้างและส่วนประกอบกรงของนกกรงหัว

                                                           จุก


               โครงสร้างกรงของนกกรงหัวจุก


                              โครงสร้างภายนอกกรงของนกกรงหัวจุก




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